* vec.cc: Include <new> and <exception>.

	(__cxa_vec_ctor): Use __cxa_vec_dtor for cleanup.
	(__cxa_vec_dtor): Catch dtor exceptions, and rethrow or
	terminate.
	(__cxa_vec_delete): Catch dtor exceptions.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@33042 138bc75d-0d04-0410-961f-82ee72b054a4