make both GCC and Clang first-case citizens in Clang-based toolchains (as opposed to using ClangGCC)

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>

bump version to v1.15.0 and update release notes

OpenFOAM 2.3.0 + bug fixes

add vt_cupti patch for OpenMPI v1.7.3

Merge branch 'tloizou-contrib_OpenFOAM' of github.com:besserox/easybuild-easyconfigs into tloizou-contrib_OpenFOAM

Merge OpenFOAM-extend cleanup

fix OpenFOAM-Extend builds after changes in OpenFOAM easyblock, add easyconfig for OpenFOAM-Extend v3.1

Merge branch 'contrib_OpenFOAM' of https://github.com/tloizou/easybuild-easyconfigs into tloizou-contrib_OpenFOAM

Fix conflicts:
OpenFOAM-2.3.0-goolf-1.4.10.eb renamed as OpenFOAM-2.3.0-goolf-1.4.10-bugfix1.eb and updated

Perl Download links Changed to cpan.metacpan.org

Conflicts:
	easybuild/easyconfigs/p/Perl/Perl-5.20.0-ictce-5.5.0.eb

Add GCC 4.9.1

Clang update to 3.4.2