clean up recursively determining dependencies, fix bug when depth was set to 0 (which resulted in infinite recursion)

only prepare for direct member module of a toolkit , not for implicit dependencies (like icc/ifort for imkl);
add BLACS as explicit dependency for goalf toolkit in example easyconfig

re-add import required for VERBOSE_VERSION, ignore PyDev warning on use of FileRepository in EasyBuild config (config is exec'ed, so it works)

pbs job convenience

Added support for submitting a task as a job to a cluster (supporting pbs atm)

Open foam support added.