define $SVN_REVISION to supress 'Not a git repository' messages in TVB easyconfig

{lib}[intel/2016a] The Virtual Brain (REVIEW)

Gurobi 6.5.1

add ALDEx2 to bundles for Bioconductor 3.2

don't hard specify toolchain for binutils build dep in likwid easyconfig, since it matches parent toolchain

don't hard specify toolchain for binutils build dep in likwid easyconfig, since it matches parent toolchain

`dummy` toolchain version cause dependency not to be loaded at build time