Allow conflicts_with to accept multiple formula names

Closes #22202.
De-duplicate conflicts for mysql and friends
Add reasons for pdf2image, poppler, and xpdf conflicts
superenv: fix no-op system path filtering
cairo 1.12.16
Remove default values from ENV.{cc,cxx}

Closes #22138.
mosh: --enable-completion

Closes #22203.

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>
universal_archs returns ArchitectureListExtension

Closes #22210.

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>
geoserver 2.3.5

http://blog.geoserver.org/2013/08/18/geoserver-2-3-5-released/

Closes #22200.

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>
openvpn: fix compilation on <= :leopard

Fixes mistydemeo/tigerbrew#112.