Two modifications:
1. The addition of 2013 to the copyright year range for every file;
2. The use of a single year range, instead of potentially multiple
year ranges, as approved by the FSF.
* NEWS: Announce JIT interface.
* Makefile.in (SFILES): Add jit.c.
(HFILES_NO_SRCDIR): Add jit.h.
(COMMON_OBS): Add jit.o.
* jit.c: New file.
* jit.h: New file.
* breakpoint.h (enum bptype): Add bp_jit_event to enum.
* breakpoint.c:
(update_breakpoints_after_exec): Delete jit breakpoints after exec.
(bpstat_what): Update event table for bp_jit_event.
(print_it_typical): Added case for bp_jit_event.
(print_one_breakpoint_location): Added case for bp_jit_event.
(allocate_bp_location): Added case for bp_jit_event.
(mention): Added case for bp_jit_event.
(delete_command): Added case for bp_jit_event.
(breakpoint_re_set_one): Added case for bp_jit_event.
(breakpoint_re_set): Added call to jit_inferior_created_hook.
(create_jit_event_breakpoint): New.
* infrun.c (handle_inferior_event): Add handler for jit event.
(follow_exec): Add call to jit_inferior_created_hook.
* doc/gdb.texinfo: Add chapter on JIT interface.
