feature/tramp-thread-safe updated (ac98caa -> 47156f1)

[Michael Albinus]

albinus pushed a change to branch feature/tramp-thread-safe.

      from  ac98caa   Sync with Tramp 2.5.0
      adds  ccb15ad   Remove another test for deleted lread feature
      adds  3480071   Fix C-h C-h bug due to mutating a hash key
      adds  d1e8ce8   Make after-change-functions called from call-process get 
the correct BEG
      adds  9f6a4bb   Remove the optional KEEP-ORDER argument to regexp-opt
      adds  4d8d25d   * doc/lispref/variables.texi (special-variable-p): 
Clarify limits
      adds  75a9eee   ; * src/editfns.c (Fbuffer_size): Tiny clarification.
      adds  78d76cd   Remove redundant 'msft' compilation error rule (bug#39595)
      adds  faada7c   Remove obsolete menu entry "Redisplay buffer"
      adds  7448834   Correct default regexp in 'package-menu-hide-package'
      adds  b392c9f   Fix 'reverse-region' when less than one line is in region
      adds  888ffd9   Fix unexec failure on macOS 10.15.4
      adds  7ceb45f   Reformulate c-end-of-macro, handling multiline block 
comments better
      adds  f633e01   Merge from origin/emacs-27
      adds  df9da94   * src/lread.c (read1): Fix int/Lisp_Object mix up.
      adds  556cc72   Improve C-h C-h bug fix
       new  47156f1   Merge remote-tracking branch 'origin/master' into 
feature/tramp-thread-safe


Summary of changes:
 doc/lispref/searching.texi               |  9 ++---
 doc/lispref/variables.texi               |  4 +++
 etc/NEWS.27                              |  7 ----
 lisp/emacs-lisp/package.el               |  6 ++--
 lisp/emacs-lisp/regexp-opt.el            | 43 +++++------------------
 lisp/progmodes/cc-engine.el              | 58 +++++++++++++++-----------------
 lisp/progmodes/cc-langs.el               | 36 ++++++--------------
 lisp/progmodes/compile.el                |  7 ----
 lisp/sort.el                             | 17 +++++++---
 src/callproc.c                           |  5 +--
 src/editfns.c                            |  2 +-
 src/lread.c                              | 18 ++++++++++
 src/unexmacosx.c                         | 47 +++++++++++++-------------
 test/lisp/emacs-lisp/bytecomp-tests.el   | 11 ------
 test/lisp/emacs-lisp/regexp-opt-tests.el | 44 ++++--------------------
 15 files changed, 122 insertions(+), 192 deletions(-)