* gladeui/glade-utils.h, gladeui/glade-builtins.h: Removed unused prototypes

	* gladeui/glade-editor.c: Added safety check.

	* gladeui/glade-property.c: Dont load virtual properties.

	* gladeui/glade-property-class.c: Fixed bug where G_PARAM_SPEC_BOXED was
	  used to check if the value held a boxed type.


svn path=/trunk/; revision=1810