fix zlib dependency version to avoid version conflicts

use correct zlib version as dependency for Python 2.7.3

remove Perl as dependency, as it is not supported yet

fix typo

add easyconfig for OpenMPI with hwloc, knem, checkpoint and Torque/PBS support

add easyconfig for MVAPICH2 with hwloc and checkpointing support

Python fixes + mercurial support

fix contributed easyconfigs

fix typos in easyconfigs (sanityCheckPaths -> sanity_check_paths and source_URLs -> source_urls), add custom sanity checks for libpng and freetype

release prep

Conflicts:
	easybuild/easyconfigs/p/Python/Python-2.7.3-goalf-1.1.0-no-OFED.eb
	easybuild/easyconfigs/p/Python/Python-2.7.3-ictce-4.0.6.eb

clean up extension options

renaming of easyconfig parameters that did not adher to naming scheme (no more CamelCase)

fix indentation in easyconfig files + minor fixes, remove hackish redefinition of sanity_check_paths for SOAPdenovo