want to inspect previous version of function
generic getOrSkipSome for ExecutionBlock base class.
getOrSkipSome method for singleton block.
reversing changes to skipSome and getSome for EnumerateCollectionBlock.
getOrSkipSome method for FilterBlock.
removing DEBUG statements.
method for getOrSkipSome for AggregateBlock, now working.
removed deprecated skipSome from FilterBlock.
removed deprecated skipSome method from AggregateBlock.
Merge branch 'aql2' of ssh://github.com/triAGENS/ArangoDB into aql2

Conflicts:
	arangod/Aql/ExecutionBlock.h
Complete merge.