Regtest bug fixes

cleanup in develop branch

added ecore clusterapps .eb file

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

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