fix unsetting of LDFLAGS for Python 2.4 (popping from os.environ doesn't work, see http://bugs.python.org/issue1287)

don't include pthread library with MKL (because it resides somewhere else, and numpy won't find it in e.g. mkl/lib/intel64)

fix Python support with ictce toolkit by tweaking specified libraries in numpy's site.cfg (refs #268)
clean up IMKL lib defs in toolkit.py, fix some bugs along the way

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)