sync with develop

{toolchain}[dummy] foss/2016.04

{toolchain}[dummy] intel/2016.03-GCC-5.3

{toolchain}[dummy] intel 2016.02-GCC-5.3 (REVIEW)

PGI: add OpenMPI and pompi toolchain easyconfigs.

{numlib}[intel/2016a] CGAL 4.8 (REVIEW)

GraphicsMagick: add include/GraphicsMagick to CPATH as that is the in…

{numlib}[intel/2016a] SuiteSparse v4.5.2

fix empty moduleclass in FLANN easyconfig, make sure it doesn't happen again

{vis}[intel/2016a] FFmpeg v3.0.2

{vis}[intel/2016a] PCL v1.7.2 (REVIEW)

bump hwloc to 1.11.3, add missing hwloc easyconfig file

drop toolchainopts from Eigen easyconfigs, since it is headers-only

modify easyconfig PCL-1.7.2-intel-2016a-Python-2.7.11.eb, modify easyconfig VTK-6.3.0-intel-2016a-Python-2.7.11.eb