Add new decorator @gwrap which forces us to declare types for both return

Add new decorator @gwrap which forces us to declare types for both return

2008-08-10  Colin Walters  <walters@verbum.org>

	* giscanner/cgobject.py: Add new decorator @gwrap which forces
	us to declare types for both return value and parameters.  The
	ctypes default of 'int' is bad because it hides 32/64 bit
	problems.  Convert all existing functions to use it.

svn path=/trunk/; revision=344