New macros.
- configure.in, include/cl_config.h.in (CL_VERSION, CL_VERSION_MINOR,
CL_VERSION_PATCHLEVEL): New definitions.
- autoconf/config.guess, autoconf/config.sub, autoconf/ltconfig,
autoconf/ltmain.sh: updated from FSF (libtool 1.3.5, etc).
- src/Makefile.in, configure.in: release-variables renamed from
CLN_* to CL_*.
- configure.in: default to build both shared and static library
(i.e. default to the most common behaviour).
since they are maintained while the ones from FSF aren't and there
were problems on some architectures, PowerPC in particular. See the
file gmp/README.CLN. This way the hard links in this directory have
vanished, they were causing trouble for people working in AFS and also
with CVS.