use apply_regex_substitutions in easyblocks, where appropriate

[boegel]

requires easybuilders/easybuild-framework#1388

TODO:

• aladin.py
• atlas.py
• boost.py
• clang.py
• cp2k.py
• cufflinks.py
• ferret.py
• gamess_us.py
• impi.py
• molpro.py (update Molpro easyblock to support binary installs and 2015 version #807)
• mummer.py
• ncl.py
• openfoam.py (Openfoam extend 3.2 update #770)
• python.py
• quantumespresso.py
• rosetta.py
• scipion.py
• scotch.py
• suitesparse.py
• tinker.py
• trinity.py (Trinity easyblock bumped to work with version 2.1.1 #802)
• wien2k.py
• wps.py
• wrf.py (cfr. use apply_regex_substitutions in WRF easyblock #685)
• xcrysden.py
• xmipp.py