llvm: install all tools, make keg-only.

Closes #24263.
mysql: modernize style, add compilation comment
mariadb: port changes from mysql formula and modernize style
percona-server: port changes from mysql formula and modernize style
mysql/percona: remove readline cruft

It does not appear to be possible to make mysql or percona link against
GNU readline anymore, since mysql stopped bundling it.
pypy: unset PYTHONPATH while building

Fixes #24364.
Box2D v2.3.0

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
gcutil 1.11.0

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
libtorrent-rasterbar 0.16.12

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
msktutil 0.5.1

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
authexec: compile manually to avoid universal build
dmtx-utils: add pkg-config dep
ezstream: add pkg-config dep
libxspf: fix build under superenv
sispmctl: fix dependency
ETL 0.04.17
python: remove outdated patch

Fixes #24366.
gearman: fix build on OS X 10.9

Closes #22612.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
libstxxl: fix compile on OS X 10.9

Closes #23171.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
saltstack: Fix HEAD versioning

SaltStack needs its repositories fully cloned to provide proper versioning.

Closes #24357.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>