* plugins/debug-manager/debugger.c,
	plugins/debug-manager/plugin.c,
	plugins/gdb/debugger.c,
	libanjuta/interfaces/libanjuta.idl:
	Add a GError* parameter to debugger-stopped signal

	* (added) libanjuta/anjuta-error.c,
	(added) libanjuta/anjuta-error.h,
	libanjuta/Makefile.am:
	Register GError as a boxed type

	* libanjuta/interfaces/anjuta-idl-compiler.pl:
	Support GError* in signal, GError must be registered as a boxed type
	Accept NULL as strings

svn path=/trunk/; revision=3030