[elpa] externals/compat updated (99e7939350 -> ce2fecf94e)

[ELPA Syncer]

elpasync pushed a change to branch externals/compat.

      from  99e7939350 Remove references to the deleted "Emacs 24.5" node
       new  2dae9e67ac Avoid testing 'subr-primitive-p' in some cases
       new  d3142f3f04 Elaborate the "Usage" section of the manual
       new  ce2fecf94e Bump to version 28.1.2.1


Summary of changes:
 NEWS.org        | 14 ++++++++++++++
 compat-tests.el |  3 ++-
 compat.el       |  2 +-
 compat.texi     | 13 ++++++++-----
 4 files changed, 25 insertions(+), 7 deletions(-)