Bio-SamTools and its dependencies. SAMTools wrong compiler corrected (wa...

Easyblock https://github.com/hpcugent/easybuild-easyblocks/pull/450 needed.

Samtools was compiled with gcc, despite the ictce/intel toolchain. Most probably this is the situation in the case of SAMTools 0.1.18 versions as well.
Thanks for noticing and reporting this. 
@cedric wrote the first bits originally, yet most likely it was me who transcribed it for ictce.
So, whomever of you is relying on samtools-0.1.18/ictce, can you comment on current status? 
(I will certainly look at it eventually, but perhaps not at the speed you neet it).