remove custom exts_filter in various easyconfigs for (bundles of) Python packages

{toolchain}[dummy] intel/2016.02-GCC-4.9

{math}[intel/2016a] statsmodels v0.6.1

{bio}[dummy] sratoolkit 2.5.7 

include pandas as extension in Python 3.5.1 easyconfigs

{data,vis}[intel/2016a] scikit-learn v0.17.1, matplotlib v1.5.1

{chem}[dummy/dummy] ADF v2016.101

modify easyconfig scikit-learn-0.17.1-intel-2016a-Python-3.5.1.eb, modify easyconfig matplotlib-1.5.1-intel-2016a-Python-3.5.1.eb

Adding CP2K v.2.4.0 and CP2K with i-pi

add subversion v1.6.23 as build dep for Python 2.5.6, add easyconfigs for subversion + deps

{bio}[foss-2015b] Exonerate-2.2.0

Drop -XC suffix on Cray toolchain

New OpenFOAM 3.0.0 intel 2015b toolchain

drop patch for XML-Bare in Perl easyconfig that's specific to icc

fix (OS) deps, add checksums, remove parameter definition with default values in MVAPICH2 easyconfigs

{bio} [foss-2015b] PRINSEQ-0.20.4

{tools} [dummy] itac 9.0.3.051

{bio}[foss/2016a,intel/2016a] SAMtools v1.3, SAMtools v1.3

{bio}[foss/2016a,intel/2016a] VCFtools v0.1.14, VCFtools v0.1.14

fix source URLs for Bioconductor 3.2

add easyconfig VCFtools-0.1.14-foss-2016a-Perl-5.22.1.eb, add easyconfig VCFtools-0.1.14-intel-2016a-Perl-5.22.1.eb