Bug#657962: gcc-defaults: Add gcc-plugin-dev?

[Konstantin Demin <rockdrilla@gmail.com>]

Hello!

I suppose that gcc-plugin-dev metapackage will be very useful.

For example, Linux kernel supports GCC at least 4.5 for it's GCC
plugin infrastructure (ref: Documentation/gcc-plugins.txt), while
oldest GCC version in Debian is 4.6.3. Further example explanation is
the one may configure it's own Linux kernel source package simply
specifying gcc-plugin-dev in Build-Depends, as it done for
gcc-multilib (build dependency for linux-perf).

Anyway, this package is mostly intended to use by developers, so I
dont' see any problem when something does not build at first time
(solving FTBFS is part of work).

-- 
SY,
Konstantin Demin