2003/12/23 Rafael Teixeira <rafaelteixeirabr@hotmail.com>

2003/12/23  Rafael Teixeira <rafaelteixeirabr@hotmail.com>
	* driver.cs : added stubs for options "/netcf /sdkpath:path"
	* namespace.cs, decl.cs, rootcontext.cs : use hashtable to avoid duplicate importation of namespaces
	  (especially between command-line option /imports and explicit Import clauses), what manifested itself as
	  error messages for ambiguous names that where in truth identical
	* statement.cs : trying to fix the 'exit' statement DoEmit, for "Exit Sub"
	* mb-parser.jay, mb-tokenizer.cs : initial support for type_characters (dim az$ = dim az as string)

svn path=/trunk/mcs/; revision=21473