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This reverts commit b7651649.

* lisp/textmodes/tex-mode.el (tex-common-initialization): Use
setq-local to modify prettify-symbols-compose-predicate.

(struct byte_stack): Re-add `bottom'.
(exec_byte_code): Initialize it.

* lisp/ibuf-ext.el (shell-command-pipe): Insert the output in buffer
'*Shell Command Output*', as command 'shell-command-file'.

* test/lisp/erc/erc-track-tests.el (erc-track--erc-faces-in):
Enable Font Lock mode in order to initialize
'char-property-alias-alist' (Bug#23954).

* src/process.c (connect_network_socket): Don’t use
external_sock_fd after closing it.  Problem found by Coverity Scan.

Preserve text properties in folded lines (bug#24034).

* src/editfns.c (tzlookup): Fix storage lifetime bug when
INTEGERP (zone) && settz.  Problem found by Coverity Scan.

Fixes: bug#24035

* lisp/net/shr.el: Require image, since some builds seem to
break without it (bug#24035).

* lisp/gnus/gnus-sync.el: Removed in favor of gnus-cloud.el.

* lisp/gnus/gnus-cloud.el: Autoload EPG functions. Change storage format to
simplify non-file data.
(gnus-cloud-storage-method): New defcustom to support nil, Base64,
Base64+gzip, or EPG encoding on the Gnus Cloud IMAP server. Defaults to
EPG if that's available, Base64+gzip otherwise.
(gnus-cloud-interactive): New defcustom to make Gnus Cloud operations
interactive, defaults to enabled.
(gnus-cloud-group-name): New variable for the Gnus Cloud group name.
(gnus-cloud-make-chunk): Tag with "Gnus-Cloud-Version" instead of just
"Version".
(gnus-cloud-insert-data): Simplify and support :newsrc-data entries.
(gnus-cloud-encode-data, gnus-cloud-decode-data): Support various
storage methods as per gnus-cloud-storage-method.
(gnus-cloud-parse-chunk): Look for "Gnus-Cloud-Version" marker.
(gnus-cloud-parse-version-1): Fix parsing loop bug. Handle :newsrc-data
entries.
(gnus-cloud-update-all): Handle :newsrc-data entries and dispatch to
file and data handlers.
(gnus-cloud-update-newsrc-data): New function to handle :newrsc-data
entries.
(gnus-cloud-update-file): Rework to support gnus-cloud-interactive and
be more careful.
(gnus-cloud-delete-file): Remove; merged into gnus-cloud-update-file.
(gnus-cloud-file-covered-p, gnus-cloud-all-files)
(gnus-cloud-files-to-upload, gnus-cloud-ensure-cloud-group)
(gnus-cloud-add-timestamps, gnus-cloud-available-chunks)
(gnus-cloud-prune-old-chunks): Fix indentation.
(gnus-cloud-timestamp): New function to make a standard Gnus Cloud
timestamp.
(gnus-cloud-file-new-p): Use it.
(gnus-cloud-upload-all-data): Add interactive convenience function to
upload all data.
(gnus-cloud-upload-data): Make interactive; collect files and newsrc
data separately; refresh Gnus Cloud group after insert.
(gnus-cloud-download-all-data): Add interactive convenience function to
download all data.
(gnus-cloud-download-data): Rework to support "Gnus-Cloud-Version"
marker and different storage methods.
(gnus-cloud-host-server-p): New function to check if a server is the
Gnus Cloud host.
(gnus-cloud-collect-full-newsrc): Tag entries with :newsrc-data.
(gnus-cloud-host-acceptable-method-p): New function so
other code can check if a server method can host the Gnus cloud.
(gnus-cloud-storage-method): Use 'radio instead of 'choice for better UI.
(gnus-cloud-method): Make this a defcustom and note how to set it.

* lisp/gnus/gnus-group.el (gnus-group-cloud-map): Add Gnus Cloud autoloaded
keybindings under the `~' prefix.

* lisp/gnus/gnus-srvr.el (gnus-server-mode-map, gnus-server-make-menu-bar)
(gnus-server-cloud, gnus-server-cloud-host)
(gnus-server-font-lock-keywords, gnus-server-insert-server-line)
(gnus-server-toggle-cloud-method-server): Support Gnus Cloud
synchronized servers and synchronization host server toggling (`i' and
`I') and visual display.
(gnus-server-toggle-cloud-method-server): Use
gnus-cloud-host-acceptable-method-p.
(gnus-server-toggle-cloud-method-server): Use custom-set-variables to
set the gnus-cloud-method. Ask the user if it's OK to upload the data
right now.

* doc/misc/gnus.texi: Document Gnus Cloud package.

* src/bytecode.c [CHECK_FRAME_FONT]: Do not include frame.h, xterm.h.
Remove some old ‘#if 0’ code.

The new approach is less selective, but also less intrusive on C code.
* src/bytecode.c, src/image.c, src/keyboard.c: Ignore -Wclobbered.
* src/conf_post.h (NONVOLATILE): Remove.  All uses removed.

* src/callproc.c (child_setup): Use emacs_exec_file
so that ASLR is enabled in the child process.
* src/emacs.c: Move some personality details into sys/sysdep.c.
Do not include <sys/personality.h>.
(main): Disable ASLR earlier, so that we don’t chdir twice.
* src/lisp.h (disable_address_randomization): New decl.
* src/sysdep.c (disable_address_randomization)
[HAVE_PERSONALITY_ADDR_NO_RANDOMIZE]: Move personality details
here from emacs.c.
(emacs_exec_file): New function.

* src/nsterm.m (ns_draw_window_cursor): Test glyph width vs cursor width
before setting final size.

* src/insdel.c (adjust_markers_bytepos): New function.
* src/lisp.h (adjust_markers_bytepos): Add prototype.
* src/insdel.c (replace_range, replace_range_2):
* src/editfns.c (Ftranspose_regions): Call
adjust_markers_bytepos.  (Bug#5131)

* test/src/editfns-tests.el (transpose-test-reverse-word)
(transpose-test-get-byte-positions): New functions.
(transpose-ascii-regions-test)
(transpose-nonascii-regions-test-1)
(transpose-nonascii-regions-test-2): New tests.

* lisp/image.el (image-animate-timeout): Fix the logic that tests if
an animation is too big (bug#24004).

* lisp/emulation/viper-cmd.el (viper-adjust-undo): Use it.
(viper-set-complex-command-for-undo): Save current state with
prepare-change-group.
* lisp/emulation/viper-init.el (viper-undo-needs-adjustment)
(viper-buffer-undo-list-mark): Remove.

* src/emacs.c (main) [WINDOWSNT]: Move init_environment calls after the
set_initial_environment call.  This prevents Emacs' modifications to the
environment from contaminating Vprocess_environment and
Vinitial_environment (Bug #10980).
* src/callproc.c (getenv_internal) [WINDOWSNT]: Consult Emacs' internal
environment in as a fallback to Vprocess_environment.
* test/src/callproc-tests.el (initial-environment-preserved): New Test.

* lisp/emacs-lisp/cl-seq.el (cl-reduce): Explain what reducing means.

This reverts commit 5811404f.

It doesn't have the consensus, as evidenced by
http://lists.gnu.org/archive/html/emacs-devel/2016-06/msg00138.html

This reverts commit 001d88b6.

It doesn't have the consensus, as evidenced by
http://lists.gnu.org/archive/html/emacs-devel/2016-06/msg00138.html

* src/nsmenu.m (pop_down_menu, ns_popup_dialog): Remove references to
autorelease pool and Popdown_data struct.

* lisp/hexl.el (hexl-mode):
* lisp/ielm.el (inferior-emacs-lisp-mode):
* lisp/progmodes/cfengine.el (cfengine3-mode):
* lisp/progmodes/elisp-mode.el (emacs-lisp-mode):
* lisp/progmodes/octave.el (octave-mode, inferior-octave-mode):
* lisp/progmodes/python.el (python-mode):
* lisp/simple.el (read--expression): Add buffer-locally to hook
eldoc-documentation-functions.

* lisp/international/ucs-normalize.el (ucs-normalize-combining-chars-regexp):
(quick-check-list-to-regexp): Use regexp-opt-charset instead of
regexp-opt.
* lisp/international/ucs-normalize.el (quick-check-list): Reuse a single
temp buffer for the whole loop.

Some tests are marked as expected to fail.

* test/lisp/international/ucs-normalize-tests.el: New tests.
* admin/unidata/NormalizationTest.txt: Add data for tests.
* admin/unidata/README: Add URL for NormalizationTest.txt.
* admin/notes/unicode: Add note about running (and updating the data
for) the new tests.  Remove note about normalization being unsupported.

* src/xdisp.c (get_phys_cursor_geometry): Fix invalid C operator.

* src/bytecode.c (PUSH): Remove workaround for long-obsolete compiler.

It is no longer needed now that we assume GC_MARK_STACK ==
GC_MAKE_GCPROS_NOOPS.
* src/bytecode.c (BYTE_MAINTAIN_TOP): Remove.
All uses removed, and code simplified accordingly.
(BEFORE_POTENTIAL_GC, AFTER_POTENTIAL_GC): Remove, since they
are always no-ops now.  All uses removed.
(MAYBE_GC): Remove.  All uses replaced by maybe_gc,
since it is now equivalent.

* src/bytecode.c: Remove comments that are no longer accurate.
Most of these are actually old ChangeLog entries.

Inspired by a suggestion by Florian Weimer in:
https://sourceware.org/ml/libc-alpha/2016-07/msg00425.html
* configure.ac (HAVE_PERSONALITY_ADDR_NO_RANDOMIZE):
Rename from HAVE_PERSONALITY_LINUX32, and check for
ADDR_NO_RANDOMIZE (the crucial thing) instead of for LINUX32.
All uses changed.
* src/emacs.c (main) [HAVE_PERSONALITY_ADDR_NO_RANDOMIZE]:
Use ADDR_NO_RANDOMIZE from personality.h rather than inventing the
flag ourselves.  Just set that flag, rather than also setting the
persona.  When doing it, avoid functions like putenv that may
allocate memory.

This reverts commit bdda4855.

Fixes bug #23944.

* lisp/progmodes/cc-engine.el (c-literal-limits): make the sixth argument of
an invocation of parse-partial-sexp 'syntax-table, not the fourth.

* configure.ac ("$hybrid_malloc" = yes): Set GNU_MALLOC to no,
parenthesize value of GNU_MALLOC_reason.

* lisp/sort.el (delete-duplicate-lines): Delete duplicate
first line when operating backward (bug#23863).

* Makefile.in (base_obj): Remove $(SHEAP_OBJ).

Use shr-image-map instead of shr-map (bug#23964).

* lisp/cus-edit.el (mouse): Remove both group definitions.

* lisp/emacs-lisp/autoload.el (update-directory-autoloads): Do not
exclude preloaded libraries or remove entries generated for them.
(autoload-generate-file-autoloads): Do not generate autoload
statements for preloaded libraries.