Code cleanup: constification.
* solib.c (solib_ops): Make return type and ops variable type const.
(set_solib_ops): Make the new_ops parameter and ops variable const.
(solib_find, solib_map_sections, clear_so, free_so, update_solib_list)
(solib_add, solib_keep_data_in_core, clear_solib)
(solib_create_inferior_hook, in_solib_dynsym_resolve_code)
(reload_shared_libraries, solib_global_lookup): Make the ops variable
const.
* solib.h (set_solib_ops): Make the new_ops parameter const.
gdb/ChangeLog:
* data-directory/Makefile.in (SYSTEM_GDBINIT_SRCDIR): New
variable.
(VPATH): Add SYSTEM_GDBINIT_SRCDIR.
(SYSTEM_GDBINIT_DIR, SYSTEM_GDBINIT_INSTALL_DIR)
(SYSTEM_GDBINIT_FILES): New variables.
(all): Add stamp-system-gdbinit.
(stamp-system-gdbinit): New rule.
(clean-system-gdbinit, install-system-gdbinit)
(uninstall-system-gdbinit): New rules. Make them .PHONY.
(install-only): Add dependency on install-system-gdbinit.
(uninstall): Add dependency on uninstall-system-gdbinit.
(clean): Add dependency on clean-system-gdbinit.
* system-gdbinit/elinos.py: New file.
* system-gdbinit/wrs-linux.py: New file.
get_addr_from_python calls out of TRY_CATCH.
(infpy_write_memory, infpy_search_memory): Likewise.
* python/py-utils.c (get_addr_from_python): Return negative
value on error. Use TRY_CATCH.
* python/python-internal.h (get_addr_from_python): Use
CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION.
CPYCHECKER_RETURNS_BORROWED_REF.
* python/python-internal.h (CPYCHECKER_RETURNS_BORROWED_REF):
New define.
(pspace_to_pspace_object, objfile_to_objfile_object)
(find_thread_object): Use it.