Doxygen EasyConfigs with added dependency EasyConfigs

New EasyConfig for libxml2 2.9.3 with the foss-2015a toolchain

New EasyConfig for PyZMQ 15.2.0 with foss-2015a toolchain and Python 2.7.11

New EasyConfig for CMake 3.4.1 with GCC 4.9.2

use libxml2 easyblock

New EasyConfigs for FreeXL with various toolchains

Libreadline easyconfig for old ictce-5.4.0 toolchain

New EasyConfig for SWIG 3.0.8 with the foss-2015a toolchain

New EasyConfig for ZeroMQ 4.1.4 with the foss-2015a toolchain

Update BFAST to use goolf-1.7.20

This updates to using a newer GCC 4.8.4 via goolf-1.7.20 in order to avoid a build
failure for GCC 4.7.2 in goolf-1.4.10.  The build failes  due to a texinfo parsing
bug in GCC documentation files.

This problem appears on systems like CentOS 7 due to stricter parsing in newer
versions of texinfo (5+) supplied by the system environment.

See the bug report for GCC 4.7.2 and patch description

  https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52903

{vis}[gimkl/2.11.5] PyFFmpeg 2.1beta (REVIEW)

minor style fixes in Python/libsodium easyconfigs

New EasyConfig for libsodium 1.0.8 with the foss-2015a toolchain

New EasyConfig for Python 2.7.11 with the foss-2015a toolchain

New EasyConfig for util-linux-2.27.1 with the foss-2015a toolchain