[ob/pushed] Make gdb_continue_to_breakpoint fail quickly on internal errors.

[Joel Brobecker]

> gdb/testsuite/
> 2014-04-22  Pedro Alves  <palves@redhat.com>
> 
> 	* lib/gdb.exp (gdb_continue_to_breakpoint): Use gdb_test_multiple
> 	instead of send_gdb/gdb_expect.

Yay for this patch! Thanks, Pedro.

-- 
Joel