formula: move cxxstdlib methods to the class.

This allows disabling this checks when e.g. pouring bottles.
gcc 4.8.2 (new formula)
shared: don't warn about non-Apple compilers now.
Support core GCC formula as a GCC compiler.

It is activated by the same mechanism as the Homebrew/versions compilers
which now check if the GCC formula uses the same, correct version.

References #28418.
LICENSE: move to root folder.

This is where people expect to find it so let's make it easier.

Closes #28418.
gcc: add bottles.
Use gcc instead of apple-gcc42 when needed.
Migrate apple-gcc42 back to homebrew/versions.

Closes #28418.
ghc: update bottle to use new GCC formula.
OpenOCD devel 0.8.0-rc2

Closes #28639.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
open-ocd: hoist pkg-config dep
gifsicle 1.83

Closes #28638.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
go 1.3beta1

Closes #28636.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
gstreamer 1.2.4

Closes #28635.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
gst-plugins-base 1.2.4

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
gst-plugins-good 1.2.4

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
gst-plugins-bad 1.2.4

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
gst-plugins-ugly 1.2.4

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
gst-libav 1.2.4

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