in mcs:
* cs-tokenizer.cs : added IsKeyword().
* doc.cs : Detect keyword incorrectly used as identifier.
Allow identifiers prefixed by @.
in tests:
* xml-036.cs, xml-036-ref.xml, Makefile : added test for bug #73384.
in errors:
* cs1041.cs : added test for bug #73385.
svn path=/trunk/mcs/; revision=41649