X11Dependency: return nil instead of raising in #<=>

Returning nil is in the contract of the Comparable module, and a future
version of Ruby will no longer hide this error.
X11Dependency: style
Include buildpath info into example formula

The example formula had no information about how
to find the current bulding directory. Now it has ;)

Closes #26554.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
graphviz 2.36.0 (--devel 2.37.20140209.1615)

Closes #26549.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
nasm: add test

Closes #26551.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
psgrep: add test

Closes #26552.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
ccal: add test

Closes #26553.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
Recognize --head as an alias for --HEAD

Homebrew currently recognizes "--head" during the install process, but
rather than actually fetch HEAD it just nags the user to use the
correct option.	Since we recognize the spelling anyway, this just
promotes the lowercase version to an official alias.

Closes #26555.
john-jumbo: fix build with clang under superenv

Fixes #26531.
qt5: use -dbus-linked when building with dbus.

This fixes the issue that Qt 5 doesn't find the D-Bus libraries when
Homebrew is installed in a non-standard prefix.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Closes #26550.
qt: use -dbus-linked when building with dbus.

This fixes the issue that Qt doesn't find the D-Bus libraries when
Homebrew is installed in a non-standard prefix.
youtube-dl 2014.02.10

Closes #26561.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
groonga 4.0.0

Closes #26557.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
groonga-normalizer-mysql 1.0.6

Closes #26558.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
weechat 0.4.3

Closes #26556.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
groonga: add optional mecab support.

Closes #26308.
swig 2.0.12

Adds C++11 support with STL containers.

Closes #26560.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
fuseki 1.0.1

Closes #26564.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
ruby-build 20140210

Closes #26567.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
boot2docker 0.5.4

Closes #26568.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>