libtoolize: massage installed macro list at make time.

libtoolize: massage installed macro list at make time.

* libtoolize.m4sh (func_massage_aclocal_DATA): Removed function
and only caller, because...
(pkgmacro_files): ...we substitute the pre-massaged files
directly...
(func_install_pkgmacro_files): ...from here.
* Makefile.am (pkgmacro_files): New pre-massaged list of aclocal
macros used by func_install_pkgmacro_files.
(configure_edit): Substitute pkgmacro_files instead of
aclocalfiles.

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