* src/tgba/acc.cc, src/tgba/acc.hh (to_cnf, is_cnf): New functions.
* src/bin/autfilt.cc: Add a --cnf-acceptance option.
* src/tgbatest/acc2.test: Test it.
This way we have for instance
(Inf(1) | Fin(2)) & (Fin(1) | Inf(3)) & Inf(0)
converted into just
(Fin(1) & Fin(2) & Inf(0)) | (Inf(0)&Inf(1)&Inf(3))
while previously we would produce 4 terms:
(Fin(2) & Fin(1) & Inf(0)) | (Fin(2) & (Inf(0)&Inf(3)))
| (Fin(1) & (Inf(0)&Inf(1))) | (Inf(0)&Inf(1)&Inf(3))
* src/tgba/acc.cc (to_dnf): Recode it.
* src/tgbatest/acc2.test: Adjust.
* src/tgba/acc.cc, src/tgba/acc.hh (complement): New method.
* src/bin/autfilt.cc: Add a --complement-acceptance option.
* src/tgbatest/acc2.test: Test it.
