* src/ltltest/lbt.test, src/ltltest/utf8.test, src/tgbatest/dbacomp.test, src/tgbatest/ltlcross.test, src/tgbatest/ltlcross2.test, src/tgbatest/ltlcrossce.test: Add set -e.
* src/tgbaalgos/dbacomp.cc: Here. * src/tgbaalgos/dbacomp.hh: Adjust documentation. * src/tgbatest/dbacomp.test: New file. * src/tgbatest/Makefile.am (TESTS): Add it. * src/tgbatest/det.test: Update.