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* gmake.defs: Set cflags and ldflags for profiling when specified.

* nt/nmake.defs:
* nt/gmake.defs (FONT_CFLAGS): Remove.
(EMACS_EXTRA_C_FLAGS): Don't include FONT_CFLAGS.
(CFLAGS): Don't include WIN32_LEAN_AND_MEAN, _WIN32_WINNT, -D$(ARCH)
and _CRTAPI1.
(ARCH_FLAGS): Don't include _X86_.

* nt/config.nt (_WIN32_WINNT, WIN32_LEAN_AND_MEAN): Define.

* src/makefile.w32-in (LOCAL_FLAGS):
Don't include WINDOWSNT, DOS_NT and _UCHAR_T.

* src/sysdep.c (_spawnlp, _getpid):
Declare with explicit _cdecl instead of _CRTAPI1.

* src/editfns.c (Fget_internal_run_time):
Check for WINDOWSNT with #ifdef, not #if.

  Don't hardcode -gstabs+, use DEBUG_INFO.

* configure.bat (gccdebug): Check for DWARF-2 support in GCC.
  Default to stabs if the compiler does not support DWARF-2.
  (genmakefiles): Write new variable DEBUG_INFO to config.settings.

(EMACS_EXTRA_C_FLAGS): Include it.

$(BLD) directory.

(DEBUG_FLAG, DEBUG_LINK): Upgrade to "-gstabs+ -g3".

forward slashes), to support building with Cygwin builds of make.

Added a partial implementation of play-sound-internal for Windows.  Fixed the following entry in etc/PROBLEMS: Emacs built on Windows 9x/ME crashes at startup on Windows XP, or Emacs built on XP crashes at startup on Windows 9x/ME.

pick up relevant bits of the Windows API definitions.

messages, since that is not supported by GNU make 3.77.

message that is to be ignored.

(EMACSLOADPATH): Ensure EMACSLOADPATH is defined in the
environment.

(LINK_FLAGS): Use it.

(COMPILER_TEMP_FILES): New definition.
(MAKETYPE): New definition.

relative to $(CURDIR).

(DQUOTE) [NEW_CYGWIN]: Cygnus changed the quoting rules since b20,
so we need to adjust how we escape embedded quotes.