release EasyBuild v2.2.0

bump version to 2.2.0 and update release notes

revert #1785, patch for OpenMPI is incomplete and causes segfaults

{lang} [goolf-1.7.20] R-3.2.0 with libraries

{bio}[intel/2015a] Bioconductor 3.1 bundle for R 3.2.1 (REVIEW)

add missing pkgs, fix order, comment out Rmpi

{lang}[intel/2015a] R v3.2.1 (REVIEW)

no mca_common_sm in OpenMPI 1.4.5 w/ ictce/5.5.0

{mpi}[iccifort/2015.3.187] impi 5.1.0.079 (or .038?) (REVIEW)

move R libs up to resolve dep issues