renamed easybuild.sh to eb

Walk up the directory tree to cleanup build dir (Issue 281)

Conflicts:
	easybuild/easybuild_config.py

adding an online option for the regtest

Conflicts:
	easybuild/build.py
	easybuild/easybuild_config.py
	easybuild/framework/application.py

Conflicts:
	easybuild/easybuild_config.py

better gcc support for mac

Conflicts:
	easybuild/easyblocks/g/gcc.py

Releasing v0.8

I'm not sure passing the option.regtest_online everywhere is the best
way to go. Might have to make this into a config value (allows for
overwriting).

Now we move easybuild (former easybuild.sh) to eb and we keep the
easybuild directory in place (instead of in lib/)

Inside the __init__.py file in lib/ we change the sys.path variable to
include the easybuild directory. This way, no special import changes
have to be made.

config.guess is a script which is also run by gcc during configuring.
On a mac uname does not provide the correct build target