2008-01-09  Juerg Billeter  <j@bitron.ch>

	* vala/parser.y, vala/scanner.l, vala/valaclass.vala,
	  vala/valacodecontext.vala, vala/valadatatype.vala,
	  vala/valainterface.vala, vala/valanulltype.vala,
	  vala/valasemanticanalyzer.vala, vala/valasymbolresolver.vala,
	  vala/valaunresolvedtype.vala, gobject/valaccodegenerator.vala,
	  gobject/valaccodegeneratorinvocationexpression.vala,
	  gobject/valaccodegeneratormethod.vala, compiler/valacompiler.vala:

	  Use non-null types by default when passing --enable-non-null to valac,
	  `?´ marks nullable types, deprecate `!´ to mark non-null types,
	  fixes bug 504222

svn path=/trunk/; revision=810