Fix MKINSTALLDIRS path in latex/Makefile.in.

* latex/Makefile.in (MKINSTALLDIRS): Fix MKINSTALLDIRS path.

Signed-off-by: Tassilo Horn <tsdh@gnu.org>
Describe branches in README.GIT.

* README.GIT: Describe branches of the repository.
Add choices for the values of La/TeX-Omega-command.

* tex.el (TeX-Omega-command): Add aleph and omega choices.
(LaTeX-Omega-command): Add lamed and lambda choices.  (Bug#19260)
Add new styles.

* Makefile.in (STYLESRC): Add new styles.

* style/newtxttt.el: New file.

* style/newtxtext.el: New file.

* style/newtxsf.el: New file.

* style/newtxmath.el: New file.

* style/fbb.el: New file.

* style/erewhon.el: New file.

* style/baskervaldx.el: New file.

Signed-off-by: Mosè Giordano <mose@gnu.org>
[Fix #19301] Fix closing bracket in style/mathtools.el.

* style/mathtools.el ("mathtools"): Fix closing bracket
placement.  (Bug#19301)