remove R pkgs with external deps + any pkgs that depend on them, minor version bump in 2 Bioconductor pkgs

{lang} [foss/2015a] R 3.1.2 new EB and deps for foss-2015a (REVIEW)

{lib}[intel/2015a,foss/2015a] XML related libaries + deps (REVIEW)

Added gompi toolchain 1.5.16 (GCC 4.8.3, OpenMPI 1.6.5)

remove R pkgs with external deps + any pkgs that depend on them, minor version bump in 2 Bioconductor pkgs

add unit test to check that all extra_options keys are defined in EasyConfig instance

{tools} [GCC-4.9.2] binutils 2.25 (REVIEW)

{tools}[GCC/4.9.2,foss/2015a] git and Mercurial + deps (REVEIW)

Eigen

{mix}[foss/2015a] smattering of libraries (REVIEW)

Using BITBUCKET_SOURCE.

Bsoft

{tools}[GCC/4.9.2] Emacs and Doxygen (REVIEW)

bumping versions that have disappeared from Bioconductor and removing partitions(gmp) and vegan(tcl/tk) for deps

switch to CmdCp in bsoft easyconfig + style fixes