add symbol dependency for generic type arguments

add symbol dependency for generic type arguments

2007-11-22  Juerg Billeter  <j@bitron.ch>

	* vala/valasemanticanalyzer.vala: add symbol dependency for generic
	  type arguments

	* gobject/valaccodegenerator.vala, gobject/valaccodegeneratorclass.vala,
	  gobject/valaccodegeneratormethod.vala: add type property for generic
	  type parameters, support typeof for type parameters

	* configure.ac: require glib 2.12 for g_value_get_gtype

svn path=/trunk/; revision=694