emacs-27 updated (efc9d4f -> f765aad)

[Mattias Engdegård]

mattiase pushed a change to branch emacs-27.

      from  efc9d4f   Amend c-backward-sws better to handle multiline block 
comments
       new  96a269d   Speed up 'maven' compilation error message regexp
       new  39410cf   Speed up 'msft' and 'watcom' compilation error regexps
       new  f765aad   Make OMake support slightly less expensive (bug#39595)


Summary of changes:
 etc/compilation.txt                  | 18 ++++++++++++++++++
 lisp/progmodes/compile.el            | 30 +++++++++++++++++++++---------
 test/lisp/progmodes/compile-tests.el |  7 +++++--
 3 files changed, 44 insertions(+), 11 deletions(-)