add CP2K and Libint easyconfigs for ictce toolkit

determine interface using provided xintface tool, try and do the same for the TRANSCOMM parameter as specified in INSTALL/README; this should fix the CP2K build

rename 'specification file' to 'easyconfig'

fix issues with enforcing lowercase module names (for toolkits)

fix issues with enforcing lowercase module names (for toolkits)

enforce this by making EasyBuild only look for lowercase modules in easyblocks

complete merge of branch to fix build/install of Python with nose,numpy,scipy with goalf toolkit (closes #265)

fix downloading of package sources, don't use --skip-build for numpy/scipy (doesn't work), only unset LDFLAGS if it is set, fix use of rmtree (refs #265)

fix downloading of package sources, don't use --skip-build for numpy/scipy (doesn't work), only unset LDFLAGS if it is set, fix use of rmtree (refs #265)

fix use of options.options to options.avail_spec_params because of renaming of command line option (closes #273)

fix example eb files with respect to building shared libs being disabled by default

Conflicts:
	easybuild/build.py
	easybuild/tools/toolkit.py