master updated (770f76f -> 398afba)

[Glenn Morris]

gm pushed a change to branch master.

      from  770f76f   Remove subsumed repetitions in regexps
      adds  efc9d4f   Amend c-backward-sws better to handle multiline block 
comments
      adds  96a269d   Speed up 'maven' compilation error message regexp
      adds  39410cf   Speed up 'msft' and 'watcom' compilation error regexps
      adds  f765aad   Make OMake support slightly less expensive (bug#39595)
      adds  4e5ac4b   Reorder discussion of integer basics
      adds  a2c4eee   Clarify when fixnums are used.
      adds  62afbc5   Fix bug when visiting euc-jp-encoded directories
      adds  28399e5   * Makefile.in (PREFERRED_BRANCH): Now emacs-27.
      adds  614203b   ; make change-history-commit
      adds  1d10885   ; spelling and comment fix
      adds  9f08524   Fix broken regexps
       new  398afba   Merge from origin/emacs-27


Summary of changes:
 ChangeLog.3                          | 72735 ++++++++++++++++++++++++++++++++-
 Makefile.in                          |     2 +-
 doc/lispref/numbers.texi             |    77 +-
 etc/compilation.txt                  |    18 +
 lisp/progmodes/cc-defs.el            |     2 +-
 lisp/progmodes/cc-engine.el          |    35 +-
 lisp/progmodes/compile.el            |    30 +-
 lisp/progmodes/simula.el             |     2 +-
 src/fileio.c                         |     2 +-
 test/lisp/progmodes/compile-tests.el |     7 +-
 10 files changed, 72848 insertions(+), 62 deletions(-)