emacs-27 updated (012c12a -> 70fe552)

[Dmitry Gutov]

dgutov pushed a change to branch emacs-27.

      from  012c12a   Fix when expose draws partially visible first glyph 
(bug#38731)
       new  c190e91   Improve docstrings
       new  98788bf   ; Improve the docstring some more
       new  65af18d   Rename xref-collect-references and xref-collect-matches
       new  43f66c3   Extract xref-matches-in-files from 
project--find-regexp-in-files
       new  181f571   Fix up requires
       new  70fe552   ; xref-references-in-directory: Autoload as well


Summary of changes:
 lisp/dired-aux.el                 |  3 +-
 lisp/progmodes/project.el         | 52 ++------------------------
 lisp/progmodes/xref.el            | 77 ++++++++++++++++++++++++++++++++++++---
 test/lisp/progmodes/xref-tests.el | 27 +++++++-------
 4 files changed, 90 insertions(+), 69 deletions(-)