[elpa] externals/auctex updated (8e292a7740 -> 749045b165)

[ELPA Syncer]

elpasync pushed a change to branch externals/auctex.

      from  8e292a7740 Improve style/expl3.el
       new  8ac3fd74ed Add new style argument hooks
       new  749045b165 Use `TeX-arg-set-exit-mark' in style/iftex.el


Summary of changes:
 doc/auctex.texi |  6 +++++
 style/iftex.el  | 74 ++++++++++++++++++++++++++-------------------------------
 tex.el          | 11 +++++++++
 3 files changed, 51 insertions(+), 40 deletions(-)