enable running of tests for HPCG

make sure & check that Graphviz does not install Tcl bindings in Tcl install prefix

fix buildopts in tabix easyconfigs

{bio}[intel/2016b] tabix v0.2.6

{phys,vis}[intel/2016b] ncview v2.1.7, UDUNITS v2.2.20

* origin/develop:
  more remarks
  Drop tests (takes too long)
  Fix typo in Theano
  Add forgotten dep: nose-parameterized
  Added Theano/0.8.2 for intel/2016b + Python 3.5.2
  remove --with-tcl-config/--with-tk-config from R easyconfig, already done in R easyblock
  removed build statistics
  add easyconfig Java-1.6.0_24.eb
  GStreamer and GST-plugins-base 0.10 versions
  resolve dep conflicts
  add easyconfig Boost-1.61.0-foss-2016b.eb, add easyconfig GROMACS-5.1.4-foss-2016b-hybrid.eb, add easyconfig GROMACS-5.1.4-foss-2016b-mt.eb
  expat and GST version
  newline removed
  removed comments
  wxPython with foss2016a

remove --with-tcl-config/--with-tk-config from R easyconfig, already done in R easyblock

Would pydot for visualization

{lang}[dummy/dummy] Java v1.6.0_24

jModeltest 2.1.10r20160303 and MPJ-Express 0.44

{tools}[dummy/] f90cache v0.96

{tools}[dummy/] ccache v3.3.1

add easyconfig Boost-1.61.0-foss-2016b.eb, add easyconfig GROMACS-5.1.4-foss-2016b-hybrid.eb, add easyconfig GROMACS-5.1.4-foss-2016b-mt.eb