add checksums in DL_POLY Classic easyconfigs

clean up DL_POLY Classic easyconfigs with PLUMED to use enhanced easyblock

clean up DL_POLY Classic easyconfigs with PLUMED to use enhanced easyblock in https://github.com/hpcugent/easybuild-easyblocks/pull/829

* develop: (650 commits)
  fixed typo
  switch to use %(perlver)s and %(perlshortver)s templates
  style fixes
  fix GLib sanity check
  Forgotten easyconfig for pkg-config
  Add PLUMED 2.1.4 and 2.21 for intel & foss 2015b
  add easyconfig METIS-5.1.0-foss-2016a-32bitIDX.eb
  Fix sanity check for libffi
  Plumed 2.2 with intel/2015b
  libmatheval 1.1.11 with intel/2015b
  modify easyconfig OpenFOAM-3.0.0-foss-2016a.eb
  modify easyconfig OpenFOAM-3.0.0-foss-2016a.eb
  add easyconfig CMake-3.4.3-foss-2016a.eb
  modify easyconfig CMake-3.4.3-foss-2016a.eb
  modify easyconfig CMake-3.4.3-foss-2016a.eb
  add easyconfig METIS-5.1.0-foss-2016a.eb
  add easyconfig SCOTCH-6.0.4-foss-2016a.eb
  Update naming of GTK+, PyCairo and Gdk-Pixbuf
  add easyconfig SCOTCH-6.0.4-foss-2016a.eb
  add easyconfig METIS-5.1.0-foss-2016a.eb
  ...

{chem} [foss+intel/2015b] Plumed 2.2.1 2.1.3

{bio} [goolf/1.4.10] STAR-Fusion-0.6.0 and  STAR-2.5.1b (Review) 

style fixes

Add support for PyGTK with intel/2016a toolchain

fix GLib sanity check

New EasyConfig for OpenFOAM 3.0.0 with the foss 2016a toolchain

New LLVM 3.7.1 with the foss 2016a toolchain

{lib,tools}[intel/2016a] pip v8.0.2, testpath v0.3

sync with develop

Update naming of GTK+, PyCairo and Gdk-Pixbuf

{bio}[dummy-dummy] VarScan 2.4.1

fix syntax error