easyconfigs contributed during hackathon, after style cleanups and fixes

all goalf easyconfigs with goolf toolchain, fully tested

easyconfigs contributed during the hackathon (see #155, #156, #157): fix filename, style, add goolf equivalents

Merge branch 'contrib_tar_and_gzip' of github.com:tloizou/easybuild-easyconfigs into hackathon_easyconfigs

fixes for FFTW, imkl, numpy and SAMtools

numpy patch is now also requires for goalf builds, because of fixes in numpy easyblock (ATLAS autodetect is no longer used, we take control now)

add --disable-dlopen, use correct configure flag for MPI threading support