This method can be extended in subclasses, this way they can pass extra
options to the EasyBlock constructor.
This was previously passed in via the constructor, but this was very
annoying for custom subclasses of Application

This is to aid mac os x support (see #16)

better gcc support for mac

also, call installversion() instead of just version in processEasyConfig

Conflicts:
	easybuild/easyblocks/g/gcc.py

Releasing v0.8