Conflicts:
	easybuild/build.py

implement support for running EasyBuild without easyconfig file, and overriding easyconfig parameters on the command line

slightly increase wait time for asyncprocess.recv_some to 0.2s, because unit test was something failing because 0.1s was not long enough for an echo to always finish

fix Meep build by using EBROOT instead of SOFTROOT, don't specify MKL for BLAS/LAPACK with goalf build

toolkit bug fix

compile libmatheval with -fPIC, to fix broken libmatheval goalf build (flex libs are built with -fPIC)

move application log instead of creating a new handler per app (which doesn't track other EasyBuild modules log messages)

added CONTRIBUTING file