Merge from origin/emacs-27

d66331ae (origin/emacs-27) Don't build the Gnulib 'utimens' module ...
f2351a68 Add Harfbuzz dependency
8944310d Don't signal during backtrace unrewind (Bug#40088)
8709aadd Fix a couple of problems in changelog generating functions
9ab85f08 Fix cl-concatenate (Bug#40180)
561e9fb9 Improve documentation of project.el commands
b28a9a6c Make svg images with links valid
7515252c * lisp/tab-line.el (tab-line-new-button-show): New defcustom.

# Conflicts:
#	etc/NEWS
#	nt/
1 job for master in 52 minutes and 44 seconds (queued for 2 seconds)
Status Job ID Name Coverage
failed #5317


Name Stage Failure
test-all Test
Makefile:319: recipe for target 'check-doit' failed
make[2]: *** [check-doit] Error 1
make[2]: Leaving directory '/builds/emacs/emacs/test'
Makefile:294: recipe for target 'check-expensive' failed
make[1]: *** [check-expensive] Error 2
make[1]: Leaving directory '/builds/emacs/emacs/test'
Makefile:959: recipe for target 'check-expensive' failed
make: *** [check-expensive] Error 2
ERROR: Job failed: exit code 1