Without this change, the distributed libtool tarball has a

Without this change, the distributed libtool tarball has a
dependency on autom4te.  There was some inconsistency in the
filenames: now we have foo.m4sh -> m4sh -> foo.in -> configure
-> foo[.sh].  Bootstrap runs the m4sh steps and the resulting .in
files are distributed.

* tests/Makefile.am (EXTRA_DIST): Distribute defs.m4sh.
* Makefile.am (EXTRA_DIST): Distribute libtoolize.m4sh.
(libtoolize.in, libtoolize): Split into bootstrap and runtime
stages.
($(top_srcdir)/tests/defs.in, $(top_srcdir)/tests/defs): Ditto.
($(top_srcdir)/config/ltmain.sh): Swap ltmain.m4sh and ltmain.in
names.
* bootstrap: Make libtoolize.in and tests/defs.in.
* NEWS: Updated.