master updated (c018895 -> 797ff44)

[Stefan Kangas]

skangas pushed a change to branch master.

      from  c018895   Remove Emacs 23 compat code from cedet
       new  2788557   Support shellcheck in compilation-mode
       new  797ff44   Fix shellcheck warning


Summary of changes:
 build-aux/update-subdirs             | 2 +-
 etc/NEWS                             | 3 +++
 etc/compilation.txt                  | 8 ++++++++
 lisp/progmodes/compile.el            | 3 +++
 test/lisp/progmodes/compile-tests.el | 5 ++++-
 5 files changed, 19 insertions(+), 2 deletions(-)