gromacs 4.6.3

Closes #21989.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
wine: fix building without x11

Closes #21986.

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

Closes #20952.
calc: use Homebrew's cc and appropriate OS X SDK

Fixes #22015.
cassandra 1.2.9

Closes #22223.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
quassel 0.9

Closes #22220.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Fix wrong assumption in MacOS::Xcode.without_clt?

Fixes #22221.
Use system path for more tools, for Linux compat.

Closes #22196.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
libftdi 1.0

Closes #21758.

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