Fixed List.Remove
Added StringBuilder.Append(Object)
Added dumb analyzer plugin API
Added basic dead code elimination plugin
Moved DeadCodeInfoProvider configuration setup
Fixed DeadCodeAnalyzer.AddAssemblies overwriting entrypoints from previous call
DCE optimizations
Merge with master
DCE: Generic support, fixed virtual method, interface and arguments processing.
Added some meta attributes for dead code elemination.

--HG--
extra : source : 21d98b02d6f6b02dcda345e332f03c471817b101
extra : amend_source : 1597ae6e492ab00e087247784f6fe5c8d3e038b1
Merge with DCE

--HG--
extra : amend_source : 57516bfe5e34b8ad6b2f954db245bb11d499fd22