* breakpoint.h (struct breakpoint): Add new member
``requested_address''.
* breakpoint.c (breakpoint_adjustment_warning)
(adjust_breakpoint_address): New static functions.
(print_it_typical): Issue warning if breakpoint's address is different
from its requested address.
(set_raw_breakpoint, set_longjmp_resume_breakpoint, watch_command_1)
(breakpoint_re_set_one): Set breakpoint's
``requested_address'' field. Set ``address'' field to the
result of calling adjust_breakpoint_address() on the requested
address.