* thread-db.c: Various comment fixes and additions.
Include "bfd.h", "symfile.h" and "objfiles.h".
(keep_thread_db): New variable.
(find_new_threads_callback): Remove prototype.
(thread_db_find_new_threads): New prototype.
(thread_db_push_target, thread_db_unpush_target): Remove
functions.
(deactivate_target): New function.
(thread_db_new_objfile): If OBJFILE == NULL, force deactivation of
target vector. Activate target vector directly instead of calling
thread_db_push_target. Set keep_thread_db if thread library is
detected in the main symbol file. Only enable thread event
reporting if there actually is a child process. Likewise for
detecting new threads, done by calling thread_db_find_new_threads
instead of iterating over the threads ourselves.
(thread_db_detach): Call deactivate_target instead of
thread_db_unpush_target.
(thread_db_wait): Bail out early if we're not debugging the
multi-threaded child process yet.
(thread_db_post_startup_inferior): New function.
(thread_db_mourn_inferior): Call deactivate_target instead of
thread_db_unpush_target.
(init_thread_db_ops): Add thread_db_post_startup_inferior to
thread_db_ops.
GET_THREAD_SIGNALS): New defines.
* config/i386/linux.mh (NATDEPFILES): Remove lin-thread.o and
linux-threads.o. Add proc-service.o, thread-db.o and lin-lwp.o.
* proc-service.c: New file.
* thread-db.c: New file.
* lin-lwp.c: New file.
