* glib/GException.cs: Added.
* generator/Ctor.cs, Method.cs: Tag function as unsafe if it throws
an exception. Call parms.HandleException.
* generator/Paramaters.cs: Add property ThrowsException (based
on a trailing GError**). If ThrowsException, mask GError in the
signature, initialize a GError in Initialize, and add new method
HandleException to throw an exception if error != null.
* generator/SymbolTable.cs: Add gdk-pixbuf DLL, and GError type.
* gdk.imaging, gdk.imaging/Makefile.in, gdk.imaging/makefile.win32:
Added.
* configure.in, Makefile, makefile.win32: Build gdk.imaging.
* gtk/Makefile.in, gtk/makefile.win32: Link against gdk.imaging.
* parser/gapi2xml.pl: Support namespace renaming.
* parser/build.pl: Build gdk-pixbuf as gdk.imaging.
svn path=/trunk/gtk-sharp/; revision=5281
