[elpa] externals/auctex updated (22b9d6a -> 747d804)

[Tassilo Horn]

tsdh pushed a change to branch externals/auctex.

      from  22b9d6a   Version 11.88.7 released.
       new  6b6c26a   Make lengths available through `LaTeX-add-lengths'.
       new  81dd544   Add the missing starred version of \AddEnumerateCounter.
       new  c25a5f5   Setup preview menu/keymap only once.
       new  a141dc2   Fix error when preview isn't loaded (intentionally)
       new  8864231   Fix the subgroup number in a regex.
       new  a770edc   New function to read labels.
       new  ef1f6bd   Add menu and new functions for error overview.
       new  4d9b411   Check engine before running LaTeX command.
       new  7e762b9   Add support for prettify-symbols-mode
       new  747d804   Change | syntax to punctuation; fixes bug#21366


Summary of changes:
 ChangeLog         |   73 ++++++++++++++++++++++++++++
 doc/auctex.texi   |   33 ++++++++++++-
 doc/changes.texi  |    5 ++
 latex.el          |   80 +++++++++++++++++++------------
 preview.el        |   79 ++++++++++++++++---------------
 style/enumitem.el |    3 +-
 style/fontspec.el |    1 +
 style/ragged2e.el |   32 ++++++-------
 tex-buf.el        |  135 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 tex.el            |   20 ++++++--
 10 files changed, 365 insertions(+), 96 deletions(-)