* src/bin/man/genltl.x, src/bin/man/ltlcheck.x, src/bin/man/ltlfilt.x, src/bin/man/randltl.x: Use .BR in the SEE ALSO section.
* src/bin/ltlcheck.cc: Add option --json and --csv. * src/bin/man/ltlcheck.x: Adjust examples. * src/tgbatest/ltlcheck.test: Do not output any statistic. * src/tgbatest/ltlcheck2.test: Output both JSON and CSV stats.
* src/bin/man/ltlcheck.x: New file. * src/bin/man/Makefile.am: Add it. * src/bin/ltlcheck.cc: Arrange help text.