IKVM loader should now be a cecil loader replacement.
Took out failing tests on mono.
ResultOfAsyncCallShouldNotBeIgnoredIssue no longer underlines a large
portion of the text.
Added obsolete EmptyExpression. (Removing was a breaking change)
Add TypeGraphNode to NRefactory; and move AbiComparer from NR.CSharp.Analysis to NR.Analysis
Add TypeGraph
Add rename API (not implemented yet).
Implemented basic rename feature.
Fixed possible parser exception.
Implemented first version of the symbol collector.
Symbol collector is now more generic and can be used to find overloads
for find references as well.
Use ISymbol in Script.Rename()
Merge NRefactory 'bbcde1ea2e9de8530c1653798215cf6f25f9ea2b' into SharpDevelop newNR branch.