Just pulling easyblocks up to develop#1

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rjeschmi wants to merge 3 commits intobartoldeman:pgifrom

Commits on Aug 7, 2015

Easyblock for PGI compilers
bartoldeman
committed

Commits on Aug 8, 2015

Improve PGI easyblock based on comments by Kenneth Hoste
bartoldeman
committed

Commits on Sep 2, 2015

Update to hpcugent/develop
rjeschmi
committed