contrib FFTW/2.1.5 and improve sources directive where needed

transform FFTW 2.1.5 easyconfigs into fat builds (both float and double libs/header files)

Merge branch 'contrib_FFTW_v2.1.5_only' of github.com:fgeorgatos/easybuild-easyconfigs into contrib_FFTW_v2.1.5_only

Contrib latest R (incl. bare for ictce 5.3.0) and Chapel

merge in develop and fix conflicts blocking PR #240

Add easyconfigs for ABINIT-7.2.1 and phonopy-1.6.4

minor style fixes + update with recent master (!)

Add Valgrind for more toolchains

add easyconfigs and patch files for Python with iqacml, and their deps

add easyconfigs for Python 2.7.5 and mpi4py 1.3 for Python 2.7.3

Conflicts:
	easybuild/easyconfigs/c/Chapel/Chapel-1.6.0-goalf-1.1.0-no-OFED.eb
	easybuild/easyconfigs/c/Chapel/Chapel-1.6.0-goolf-1.4.10.eb

Merge branch 'contrib_latest_R_and_Chapel' of github.com:fgeorgatos/easybuild-easyconfigs into contrib_latest_R_and_Chapel

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>

style fixes

Conflicts:
	test/easyconfigs/suite.py

Patches unit testing

This reverts commit 2375374e.