Workaround to make a globally visible TSetupData* available in offline and online linking.  We add an interface method TSetupData::Instance() and the main implemention file in the offline and online define this to return the relevant global pointer.
Changes to usage of TGlobalData pointers, similar to previous fix for TSetupData. Please use TGlobalData::Instance() to access this pointer.
Merge branch 'trigger_polarity' of http://github.com/thnam/AlcapDAQ into trigger_polarity

Conflicts:
	analyzer/src/common/TPulseIsland.h