import and fix merge_files.py from GaudiPolicy - adding previously missing file (AtlasCommonPolicy-00-00-55)

	* temporary fix for https://its.cern.ch/jira/browse/ATEAM-151
	* import and fix merge_files.py from GaudiPolicy
	* tagging AtlasCommonPolicy-00-00-55

2015-06-17  Rolf Seuster
	* tagging AtlasCommonPolicy-00-00-54
	* proper dependencies when splitting off debug symbols

2015-02-20  Emil Obreshkov <obreshkov@cern.ch>
	* cmt/requirements: moving setting of JOBOPTSEARCHPATH, PYTHONPATH, DATAPATH, ROOTMAPSEARCHPATH, XMLPATH from ExternalPolicy here
	  so that DetCommon project can have these paths set
	 * Tagged as AtlasCommonPolicy-00-00-53