parseaut: swallow the dstarparser

Note that the parser is still not able to reader multiple dstar
automata.

* src/dstarparse/: Delete.
* configure.ac, src/Makefile.am, README: Adjust.
* src/parseaut/parseaut.yy, src/parseaut/scanaut.ll: Merge in the
dstarparser rules.
* src/bin/common_trans.cc, src/bin/common_trans.hh,
src/bin/dstar2tgba.cc, src/bin/ltlcross.cc, src/bin/ltldo.cc,
src/tests/ikwiad.cc: Adjust usage.
* src/tests/parseaut.test: Adjust expected output.

configure.ac

@@ -200,7 +200,6 @@ AC_CONFIG_FILES([
   lib/Makefile
   src/bin/Makefile
   src/bin/man/Makefile
-  src/dstarparse/Makefile
   src/kripke/Makefile
   src/graph/Makefile
   src/parseaut/Makefile