* src/ltlvisit/Makefile.am (libltlvisit_a_SOURCES): Add them.
* src/ltltest/tunabbrev.test: New file.
* src/ltltest/lunabbrev.test: Fix comment.
* src/ltltest/Makefile.am (TESTS): Add tunabbrev.test.
(check_PROGRAMS): Add tunabbrev.
(tunabbrev_SOURCES, tunabbrev_CPPFLAGS): New variables.
* src/ltltest/equals.cc (main) [TUNABBREV]: Call unabbreviate_ltl.
* src/ltlvisit/lunabbrev.hh (unabbreviate_logic_visitor::recurse):
New virtual function.
* src/ltlvisit/lunabbrev.cc (unabbreviate_logic_visitor::recurse):
Likewise.
(unabbreviate_logic_visitor::visit): Use it instead of calling
unabbreviate_logic directly.