Task #8691: add C++ wrapper and test for POSIX sem_* semaphore functions. Call it Sem_t, since Semaphore is already taken. Used in APERTIF.

Task #9787: DPPP gaincal now considers all times in a solint before flagging a station, reintegrate task branch

Task #9054: Keep track of cluster name throughout Cobalt to put it back into the feedback instead of the host name

Task #6517: Removing domain names as not in /etc/hostname anymore on systems. Adapted comment to contain real system name.

Task #8256: Apparently, three tests were added since the development branch was created. These were missed in the change, but have been fixed now.

Task #9841: Fix pipeline_test if there are modules in the pythonpath which prepend the pythonpath again through their site.py

Task #9799: Reintegrated task branch (lofar_add_(s)bin_script should strip off file path when creating symlink) with the trunk.

Task #6517: Changing mcu001/ccu001 to mcu001old and ccu001old; changing mcu002/ccu002 to mcu001/ccu001

TAsk #6553: Removed some duplicate code as a result of merging trunk into task branch (forgot to resolve conflicts in code)

Prevent SSH_AUTH_SOCK/LC_xxx/LANGUAGE/LANG/TERM from influencing software started by swlevel/CTStartDaemon/SoftwareMonitor by giving them fixed values