libtoolize: massage installed auxiliary script list at make time.

libtoolize: massage installed auxiliary script list at make time.

* Makefile.am (configure_edit): Rename pkgconfig_files
substitution to pkgaux_files, and add pkgaux_install_files and
pkgaux_parent_files substitutions for atlocal.
(pkgauxdir): Where to install pkgaux_files.
(auxfiles): Removed, and replaced by...
(pkgaux_parent_files, pkgaux_install_files, pkgaux_data_files):
...these, which separate the files lists more logically for
easier installation, and use by libtoolize.m4sh.
(uninstall-hook): Adjust.
(tests/atlocal): Adjust.
* bootstrap.conf (libtool_link_libltdl_subdirs): Adjust.
* libtoolize.m4sh (func_install_pkgconfig_files)
(func_install_pkgconfig_subproject)
(func_install_pkgconfig_parent, func_install_pkgconfig_files)
(all_pkgconfig_files): Renamed to...
(func_install_pkgaux_files, unc_install_pkgaux_subproject)
(func_install_pkgaux_parent, func_install_pkgaux_files)
(all_pkgaux_files): ...these, resp. Adjust all callers.
(func_massage_pkgconfig_files): Removed.
(pkgaux_files): List of all auxiliary scripts substituted from
Makefile.

Signed-off-by: Gary V. Vaughan <gary@gnu.org>