CristalCaveGem » LustreC

- Added major feature: Lustre V6 automata !!!
- one automata example added
- changed the reset condition in node calls (now a simple bool expr)
- bug corrected in clock calculus
- bug corrected in traceability info
- added field in variables to test whether they are original
or created by normalization process: better error message
for causality problems

Warning: this is the first working version of automata, needs further
 testing (and debugging). AFAIK, the semantics is close to Lustre V6,
 but further changes may be needed to equate them.

git-svn-id: https://cavale.enseeiht.fr/svn/lustrec/lustre_compiler/trunk@335 041b043f-8d7c-46b2-b46e-ef0dd855326e