Before refine the codes in ExpandableAggregation
Before add Barrier Number into ExpandableBlockStreamIteratorBase
In the current version, theoretically, scan, filter, join, and
aggregation supports new expanded thread being added at any time during
the execution.
Before merging with My master branch
modified some file.
Merge branch 'LatestMaster' into ExpandableFramework

Conflicts:
	.cproject
	BlockStreamIterator/BlockStreamPrint.cpp
	Test/TestMain.cpp
	ids.h