* acinclude.m4: New file, copied from old aclocal.m4.
* configure.in: Define and call AM_PROG_LIBTOOL and friends.
Remove shared library handling; now handled by libtool. Replace
AC_CONFIG_HEADER with AM_CONFIG_HEADER. Call AM_MAINTAINER_MODE,
AM_CYGWIN32, and AM_EXEEXT. Change all .o files to .lo. Remove
stamp-h handling in AC_OUTPUT.
* acconfig.h: Mention PACKAGE and VERSION.
* stamp-h.in: New file.
* dep-in.sed: Change .o to .lo.
* Makefile.in: Now built with automake.
* aclocal.m4: Now built with aclocal.
* config.in, configure: Rebuild.
