* Makefile.in (c-lang.o, gnu-v3-abi.o): Update.

	* Makefile.in (c-lang.o, gnu-v3-abi.o): Update.
	* NEWS: Mention improved C++ thunk support.
	* c-lang.c (cplus_language_defn): Mention cplus_skip_trampoline.
	* cp-abi.c (cplus_skip_trampoline): New.
	* cp-abi.h (cplus_skip_trampoline): New prototype.
	(struct cp_abi_ops): Add skip_trampoline member.
	* gnu-v3-abi.c (gnuv3_skip_trampoline): New.
	(init_gnuv3_ops): Set skip_trampoline.

	* gdb.cp/virtfunc.exp (proc do_tests): Test stepping through a thunk.