add patch for signal package in Octave 4.2.1 easyconfigs (+ add SHA256 checksums)

{data}[intel/2017a] PyTables v3.4.2 w/ Python 3.6.1

specify that EasyBuild v3.5.0 is required in updated R easyconfigs

{vis}[intel/2017b] ImageMagick v7.0.7-14, LittleCMS v2.9, Ghostscript v9.22

{devel}[intel/2017b] SCons v3.0.1

{bio} [intel/2017a] Trinity 2.5.1

fix name in TensorFlow easyconfigs

{vis}[intel/2017b] motif v2.3.8

{geo}[intel/2017b] SpiceyPy v2.1.0

adding easyconfigs: ImageMagick-7.0.7-14-intel-2017b.eb, LittleCMS-2.9-intel-2017b.eb, Ghostscript-9.22-intel-2017b.eb

update Octave easyconfigs to use Octave easyblock, add extensions for latest Octave versions

include std=c++11 in compiler options when building Octave 4.2.1 with intel toolchain, required for some extensions

clean up configure options that are now handled by R easyblock

{lib}[GCCcore/6.4.0] glibc v2.26, glibc v2.17

{bio}[intel/2017b] FALCON v1.8.8

{tools}[GCCcore/6.4.0] patchelf v0.9

enable building ScaLAPACK in parallel with enhanced ScaLAPACK easyblocks

New version of ASAP3, with OpenKIM support.

{data}[intel/2017b] NCL v6.4.0

{data}[intel/2017a] GDAL 2.2.0 with support for HDF4 files.

{tools} [intel/2017b] networkx 2.0

update existing Octave easyconfigs to use Octave easyblock, add control/signal extensions to most recent Octave 4.2.1 easyconfig