So that instead of having to do
#incluce <spot/iface/ltsmin/ltsmin.hh>
for using installed the installed header, and
#incluce <iface/ltsmin/ltsmin.hh>
for using the non-installed version, we now do
#incluce <spot-if/ltsmin/ltsmin.hh>
in both cases.
* iface/: Rename as...
* spot-if/: ... this.
* doc/Doxyfile.in, README, configure.ac, Makefile.am,
spot/sanity/80columns.test, spot/sanity/style.test: Adjust.
* NEWS: Mention the change.
* spot-if/ltsmin/Makefile.am: Install headers in $includedir/spot-if.
* debian/libspot-dev.install: Distribute that directory as well.
* iface/ltsmin/kripke.test: Fix detection of divine's ltsmin option.
* iface/ltsmin/finite.test: Likewise. Also extra the Spins test
into...
* iface/ltsmin/finite2.test: ... this new file, so that we
can test the divine and spins interfaces independently.
* iface/ltsmin/Makefile.am: Distribute finite2.test and finite.pm.
* iface/ltsmin/ltsmin.cc, iface/ltsmin/ltsmin.hh,
iface/ltsmin/modelcheck.cc: Adjust function names.
