* src/tgbaalgos/neverclaim.cc, src/tgbaalgos/dotty.cc,
src/tgbaalgos/save.cc: Prefer '\n' over std::endl to speedup I/O.
* src/ltltest/genltl.cc (syntax): Use '\n' too, although it won't
make a big difference.
* src/ltltest/genltl.cc (fair_response, ltl_counter)
(ltl_counter_carry): New functions, constructing function from
gastin.03.cav and rozier.07.cav. The LTL counter will replace the
scripts in src/tgbatest/ltlcounter/.
(X_n): New helper function.
families of LTL formulae.
* src/ltltest/genltl.cc: New file. Based on five classes of
formulae defined in a paper by Cichón, Czubak, and Jasiński.
* src/ltltest/Makefile.am (noinst_PROGRAMS): Build genltl.