significantly speed up verifying of dumped easyconfig by resorting to 'shallow' parsing

{chem} [intel/2016b] Libint 2.1.0 (REVIEW)

Changed Open MPI version to 1.10.3, removed duplicate patch, removed mirror link and fixed some style issues.

Add warning about Tk and X

To build Tk, you need an X11 stack. All current python easyconfig need
X11 to build. Follow up in
https://github.com/hpcugent/easybuild-easyconfigs/issues/2261

* develop:
  add easyconfig gperftools-2.5-intel-2016b.eb
  add easyconfig gperftools-2.5-intel-2016b.eb, add easyconfig libunwind-1.1-intel-2016b.eb
  Circos 0.69-2 using ictce 5.5.0 toolchain
  clean up libxml2 easyconfigs according to updated libxml2 easyblock
  Add comment in patch about it's purpose
  Add CMake/3.6.1 for intel/2016b

use updated Libint easyblock

11.3.3.210

Build issues, will try to fix them later in another PR.

clean up libxml2 easyconfigs according to updated libxml2 easyblock

* develop: (2001 commits)
  add sanity check command to verify that FDS build is MPI-aware
  clean up sources spec for gdc-client bundle easyconfig
  add easyconfig dask-0.11.0-intel-2016b-Python-2.7.12.eb, add easyconfig dask-0.11.0-intel-2016b-Python-3.5.2.eb
  add easyconfig pandas-0.18.1-intel-2016b-Python-2.7.12.eb, add easyconfig pandas-0.18.1-intel-2016b-Python-3.5.2.eb
  Add CVS dependency
  add missing patch file for CRPropa
  fix source URLs for Perl extensions
  revert back changes to HEALPix, since it requires a custom easyblock
  Delete Tcl-8.6.6-GCCcore-4.9.3.eb
  Delete SQLite-3.14.1-GCCcore-4.9.3.eb
  Delete Python-2.7.12-GCCcore-4.9.3-bare.eb
  Change category to tools
  Keep using system python though jhbuild can be used with any python2 if it is leveraged during a build process
  add missing 'easyblock' specs & update unfinished HEALPix easyconfig (but still WIP)
  Binutils is builddep only
  Put binutils back as a builddep only
  Missed a very important space
  Make binutils a dep instead of a buidldep...
  add easyconfig matplotlib-1.5.2-intel-2016b-Python-2.7.12.eb, add easyconfig matplotlib-1.5.1-intel-2016b-Python-2.7.12.eb
  Migrate-N with foss2016a
  ...

* origin/develop:
  Add comment in patch about it's purpose
  Add CMake/3.6.1 for intel/2016b