Implemented EnumUnderlyingTypeIsIntIssue.
Merge branch 'master' of git://github.com/icsharpcode/NRefactory into luiscubal-redundant-underlying-type
Implemented EnumUnderlyingTypeIsIntIssue (does not work properly yet because Script.ChangeBaseTypes is not fully implemented yet).
Started Script.ChangeBaseTypes.
Merge branch 'master' of git://github.com/icsharpcode/NRefactory into luiscubal-redundant-underlying-type
Updated EnumUnderlyingTypeIsIntIssue for new API.
Merge pull request #239 from mono-soc-2013/luiscubal-redundant-underlying-type

Implemented EnumUnderlyingTypeIsIntIssue.
Fixed 'ChangeBaseTypes' function.
Fixed possible null reference exception.
Fixed PartialTypeWithSinglePartIssue to handle partial nested types with non-partial parents.
Merge pull request #242 from mono-soc-2013/luiscubal-fix-partial-type-single-part-issue

Fixed PartialTypeWithSinglePartIssue to handle partial nested types with non-partial parents.
Resolved conflicts