* solib.h (CLEAR_SOLIB, SOLIB_ADD)

* solib.h (CLEAR_SOLIB, SOLIB_ADD)
(SOLIB_CREATE_INFERIOR_HOOK, SOLIB_REMOVE_INFERIOR_HOOK)
(SOLIB_IN_DYNAMIC_LINKER, SOLIB_RESTART)
(DISABLE_UNSETTABLE_BREAK, PC_SOLIB)
(IN_SOLIB_DYNSYM_RESOLVE_CODE): Remove defines and orphaned
comments.
* breakpoint.c: Include "solib.h".
(insert_bp_location) [!DISABLE_UNSETTABLE_BREAK]: Call
solib_address.
(remove_solib_event_breakpoints, create_solib_event_breakpoint)
(disable_breakpoints_in_shlibs)
(disable_breakpoints_in_unloaded_shlib)
(re_enable_breakpoints_in_shlibs): Compile if SOLIB_ADD isn't
defined. If PC_SOLIB isn't defined, call solib_address.
(_initialize_breakpoint): Unconditionally install observer.
* corelow.c: Include "solib.h".
[SOLIB_ADD] (solib_add_stub): Remove prototype.
(core_close) [!CLEAR_SOLIB]: Call clear_solib.
(solib_add_stub) [!SOLIB_ADD] Call solib_add.
(core_open): Unconditionally call solib_add_stub.
* fork-child.c: Include "solib.h".
(fork_inferior) [!SOLIB_CREATE_INFERIOR_HOOK]: Call
solib_create_inferior_hook.
* infcmd.c: Include "solib.h".
(attach_command) [!SOLIB_ADD]: Call shlib_rescan.  Unconditionally
call re_enable_breakpoints_in_shlibs.
* infrun.c: Include "solib.h".
(SOLIB_IN_SYNSYM_RESOLVE_CODE): Don't define if not already
defined.
(stop_on_solib_events, show_stop_on_solib_events): Include
unconditionally.
(follow_exec) [!SOLIB_CREATE_INFERIOR_HOOK]: Call
solib_create_inferior_hook.
(handle_inferior_event) [!SOLIB_ADD]: Call shlib_add.
[!IN_SOLIB_DYNSYM_RESOLVE_CODE]: Call in_solib_dynsym_resolve_code.
(_initialize_infrun): Unconditionally add "stop_on_solib-events"
command.
* remote.c: Include "solib.h".
(remote_open_1): Unconditionally call no_shared_libraries.
[!SOLIB_CREATE_INFERIOR_HOOK] Call solib_create_inferior_hook.
* stack.c: Include "solib.h".
(print_frame) [!PC_SOLIB] Call shlib_for_pc.
* xcoffsolib.c (no_shared_libraries): Remove function.
* Makefile.in (SFILES): Add solib.c.
(ALLDEPFILES): Remove solib.c.
(COMMON_OBS): Add solib.o.
(breakpoint.o, corelow.o, fork-chiled.o, infcmd.o, infrun.o)
(remote.o, stack.o): Update dependencies.