provide alternative download URL for Mesa

bump versions of ictce 6.x to allow downgrading, bump impi version in ictce 6.1.5

add easyconfig file for EB v1.9.0

enable MPI & external BLAS/LAPACK for GROMACS, add ictce/5.5.0 easyconfig for GROMACS 4.6.5

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

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

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

use '-seq' versionsuffix for existing GROMACS easyconfigs and explicitely disable OpenMPI and MPI support, and -mt, -mpi and -hybrid variants (that work)

add missing easyconfigs for ictce/5.3.0

Conflicts:
	easybuild/easyconfigs/f/freeglut/freeglut-2.8.1-ictce-5.3.0.eb
	easybuild/easyconfigs/h/HDF/HDF-4.2.7-patch1-goalf-1.1.0-no-OFED.eb
	easybuild/easyconfigs/h/HDF/HDF-4.2.7-patch1-goolf-1.4.10.eb
	easybuild/easyconfigs/h/HDF/HDF-4.2.7-patch1-ictce-3.2.2.u3.eb
	easybuild/easyconfigs/h/HDF/HDF-4.2.7-patch1-ictce-5.3.0.eb
	easybuild/easyconfigs/h/HDF/HDF-4.2.8-iqacml-3.7.3.eb

Merge branch 'contrib_ictce_5.3.0_missing_ECs_p-z' of github.com:fgeorgatos/easybuild-easyconfigs into contrib_ictce_5.3.0_missing

Merge branch 'contrib_ictce_5.3.0_missing_ECs_l-o' of github.com:fgeorgatos/easybuild-easyconfigs into contrib_ictce_5.3.0_missing

Merge branch 'contrib_ictce_5.3.0_missing_ECs_f-k' of github.com:fgeorgatos/easybuild-easyconfigs into contrib_ictce_5.3.0_missing

add missing easyconfigs for ictce/5.3.0, easyconfigs series a-e