Merge pull request #247 from hpcugent/develop

release EasyBuild v1.7.0
Use unwanted env functionality to unset MKLROOT
impi 3.x only includes include/mpi.mod
fix typo
added arb easyblock
Merge branch 'develop' into impi3
psi: python 2.4 compatibility + small bug fixed
Merge pull request #267 from boegel/develop

update release notes, bump to v1.8.0
Merge branch 'develop'
Merge pull request #271 from boegel/master

release EasyBuild v1.8.0
Merge branch 'develop' into psi

* develop: (33 commits)
  last edits to release notes
  shutil.copytree doesn't like that target dir already exists
  fix typo
  make sure LDFLAGS and INSTANT_*_DIR env vars are set for DOLFIN sanity check commands
  fix remarks
  update release notes, bump to v1.8.0
  fix signature of load_module in LAPACK easyblock
  make DOLFIN build more verbose, so we can debug when problems occur
  don't try to load non-existing LAPACK module during testing
  os.path.relpath is only available in Python 2.6, so reverting to basename approach (which is less robust though)
  don't try to load non-existing LAPACK module during testing
  os.path.relpath is only available in Python 2.6, so reverting to basename approach (which is less robust though)
  move OS check for Clang to check_readiness_step, to allow a EB build job for Clang to be submitted from SL5
  add easyblock for MUMPS
  fix typo
  always use -DPentiumCPS insteado -DWALL, patch out CPU throttling check for recent ATLAS versions
  improve error messages, suggest use of $INTEL_LICENSE_FILE
  Only use cpu freq (unless ignorethrottling)
  Some small style changesSome small style changes
  use load_dependency_modules method
  ...

Conflicts:
	easybuild/easyblocks/p/psi.py
psi: fixed bug, use correct src dir to copy to intall dir
bump version to 1.8.1dev
bump version to 1.9.0dev
Merge branch 'develop' of github.com:hpcugent/easybuild-easyblocks into develop
Merge branch 'develop' of https://github.com/hpcugent/easybuild-easyblocks into develop
mpich2 is now a valid mpi version.
fix issues with running NWChem test cases
fail early if an incorrect symlink is present, wrap relevant code blocks in try-except
fix long line