Fix newlines in RedundantCatchIssueTests.
[CodeIssues] Fix RedundantThisQualifierIssue handling of fields being used inside variable initializers.
[CodeIssues] Fix handling of extension methods in RedundantThisQualifierIssue.
[CodeIssues] Avoid causing CS0135 in RedundantThisQualifierIssue.
Merge branch 'master' into issue-fixes

Conflicts:
	ICSharpCode.NRefactory.CSharp/ICSharpCode.NRefactory.CSharp.csproj
Merge pull request #229 from mono-soc-2013/simonl/issue-fixes

Some fixes. Mostly an improved RedundantThisQualifierIssue.