* wrap/python/ajax/spot.in (finish): Prune the cache once in a
while. We rely on hardlinks for garbage collecting the pictures
and dot sources that may be shared by different requests.
* wrap/python/ajax/spot.in (render_dot, render_dot_maybe)
(render_automaton, render_formula): Cache the dot source, so that
we do not have to regenerate two pictures from the same contents.
* wrap/python/spot.i: Typo in the ostringstream declaration.
* wrap/python/ajax/spot.in: Use the QUERY_STRING as a hash key to
cache the result of the script. Open stdout without buffering and
redirect it to a file that we can dump later on cache hits. Parts
of this change are extracted from code from Pierre Parutto
<parutto@lrde.epita.fr>.
* AUTHORS: Add him.
* src/tgbaalgos/dotty.hh (dotty_reachable): Take a new
assume_sba argument.
* src/tgbaalgos/dotty.cc (dotty_bfs): Take a new
mark_accepting_states arguments.
(dotty_bfs::process_state): Check if a state is accepting using
the state_is_accepting() method for tgba_sba_proxies, or by
looking at the first outgoing transition of the state. Pass
the result to the dectorator.
(dotty_reachable): Adjust function.
* src/tgbaalgos/dottydec.hh, src/tgbaalgos/dottydec.cc,
src/tgbaalgos/rundotdec.hh, src/tgbaalgos/rundotdec.cc
(state_decl): Add an "accepting" argument, and use it to
decorate accepting states with a double border.
* src/tgbatest/ltl2tgba.cc: Keep track of whether the output
is an SBA or not, so that we can tell it to dotty().
* wrap/python/ajax/spot.in: Likewise.
* wrap/python/cgi-bin/ltl2tgba.in: Likewise.
* wrap/python/ajax/spot.in: Do full scc_filter for TGBA (-R3f),
and keep some extra acceptance conditions (-R3) when
degeneralizing. The converse was done.
