master updated (d0b9cf8 -> cdbb37f)

[Glenn Morris]

gm pushed a change to branch master.

      from  d0b9cf8   * doc/lispref/processes.texi (Network): Fix xref usage.
      adds  cf57663   Mention jit-lock deferred as an alternative to 
fast-but-imprecise-scrolling
      adds  1482a75   Fix build failure with Fx_gtk_debug
      adds  3f9310b   Fix and improve documentation of mail-related features
      adds  36873ef   Fix error message for ‘cl-struct-unknown-slot’ (bug#39995)
      adds  01212a7   Do setup Flymake in file-less Elisp buffers
      adds  63e8d0e   Fix last changes describing mail commands
      adds  ff09b4e   Fix 'flymake-show-diagnostics-buffer' when line numbers 
are displayed
      adds  1dfc497   Minor wording change in Introduction to Programming in 
Emacs Lisp
       new  0a4b992   Merge from origin/emacs-27
      adds  81d07da   gnus-shorten-url: Improve and avoid args-out-of-range 
error
       new  584ff8c   ; Merge from origin/emacs-27
      adds  f84aed5   Clarify documentation on inhibit-modification-hooks 
intended usage
       new  cdbb37f   Merge from origin/emacs-27


Summary of changes:
 doc/emacs/display.texi              |  9 +++++
 doc/emacs/sending.texi              | 35 +++++---------------
 doc/lispintro/emacs-lisp-intro.texi |  3 +-
 doc/lispref/text.texi               |  7 ++++
 etc/NEWS.27                         |  4 +++
 lisp/emacs-lisp/cl-macs.el          |  2 +-
 lisp/mail/sendmail.el               |  2 +-
 lisp/progmodes/elisp-mode.el        |  6 ++--
 lisp/progmodes/flymake.el           | 65 ++++++++++++++++++++-----------------
 lisp/simple.el                      |  8 +++--
 src/insdel.c                        |  8 ++++-
 src/xfns.c                          |  4 +++
 12 files changed, 88 insertions(+), 65 deletions(-)