iomkl-6.6.2.eb toolchain and dependencies

It contains:

OpenMPI-1.6.5 (latest stable release)
hwloc-1.8.1 (latest stable release)
icc/ifort 2013_sp1.2.144
toolchain iccifort-2013_sp1.2.144.eb
imkl-11.1.2.144

also added gzip-1.6-iomkl-6.6.2.eb for testing

It depends on this PR https://github.com/hpcugent/easybuild-easyconfigs/pull/726