improve documentation, add comment line that specifies which EasyBuild version was used in generated module file

override runtest so that regtest is enabled by default, check results of regtest, add support for providing reference output for regtest

set TRANSCOMM explicitely empty if it doesn't need to be set according to diagnostic tools (this fixes segmentation fault for CP2K, see http://groups.google.com/group/cp2k/browse_thread/thread/726a56b2bdf714aa?pli=1)

add example easyconfig

add CP2K and Libint easyconfigs for ictce toolkit

determine interface using provided xintface tool, try and do the same for the TRANSCOMM parameter as specified in INSTALL/README; this should fix the CP2K build