Adding support for Chapel v1.6.0

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
added geant4 easyblock
added geant4 and root with v1.0 compatibility
Support for binary GHC packages
Remarks by boegel.
Added import for LooseVersion
fixed remarks
implemented easyblock for NEURON, still WIP because run_test needs to be fixed
fix minor style issues in README
bump version to v1.0.2, update release notes
Merge branch 'v1.0.x' into develop

Conflicts:
	easybuild/easyblocks/__init__.py
add ignore for .nja files
clean up setting of PYTHONPATH in test method
fix testing Python package via installation in temp dir
correctly set PYTHONPATH for testing built packages
fix import for get_software_version
add sanity checks for Python command being used for package installation
move sanity checks for Python being used, print Python search path before testing built Python package
Merge pull request #54 from boegel/Python_install

minor cleanups in Python easyblock
NWChem easyblock, ready to start testing (but incomplete w.r.t. module file generated and testing)