* From Peter Schauer:

    * From Peter Schauer:
        * breakpoint.h (enum bpdisp):  Add del_at_next_stop.
        * breakpoint.c (insert_breakpoints, watchpoint_check,
        bpstat_stop_status):  Avoid bad references to memory freed via
        delete_breakpoint on watchpoints going out of scope.
        Do not delete these watchpoints, disable them and change their
        disposition to del_at_next_stop instead.
        (breakpoint_auto_delete):  Delete all breakpoints whose disposition
        is del_at_next_stop.
        (breakpoint_init_inferior):  Use switch to avoid reference to
        already deleted breakpoint.
Fixes dangling pointer problems with watchpoints.