2011-06-22 Pedro Alves <pedro@codesourcery.com>

2011-06-22  Pedro Alves  <pedro@codesourcery.com>

	* breakpoint.h (struct breakpoint_ops): New field `dtor'.
	(struct breakpoint): Delete field `syscalls_to_be_caught'.
	* breakpoint.c (init_raw_breakpoint_without_location): Remove
	reference to syscalls_to_be_caught.
	(catch_fork_breakpoint_ops, catch_vfork_breakpoint_ops): Install a
	NULL `dtor'.
	(struct syscall_catchpoint): New type.
	(dtor_catch_syscall): New function.
	(insert_catch_syscall, remove_catch_syscall)
	(breakpoint_hit_catch_syscall, print_one_catch_syscall)
	(print_recreate_catch_syscall): Adjust.
	(catch_syscall_breakpoint_ops): Install dtor_catch_syscall.
	(catch_exec_breakpoint_ops): Install a NULL `dtor'.
	(create_syscall_event_catchpoint): Adjust to use init_catchpoint.
	(ranged_breakpoint_ops, watchpoint_breakpoint_ops)
	(masked_watchpoint_breakpoint_ops)
	(gnu_v3_exception_catchpoint_ops): Install a NULL `dtor'.
	(delete_breakpoint): Call the `dtor' breakpoint_ops method, if
	there is one.  Remove references to syscalls_to_be_caught.
	(catching_syscall_number): Adjust.
	* ada-lang.c (catch_exception_breakpoint_ops)
	(catch_exception_unhandled_breakpoint_ops)
	(catch_assert_breakpoint_ops): Install a NULL `dtor'.