Add the following rules:
- f|[+] = [+] if f rejects [*0]
- f|[*] = [*] if f accepts [*0]
- f&&[+] = f if f rejects [*0]
- b:b[*i..j] = b[*max(i,1)..j]
- b[*i..j]:b[*k..l] = b[*max(i,1)+max(k,1)-1,1), j+l-1]
* spot/tl/formula.cc: Implement the new rules.
* doc/tl/tl.tex: Document them.
* tests/core/equals.test: Test them.
* NEWS: Add them
For issue #485.
* spot/tl/formula.cc, spot/tl/formula.hh: Catch min/max overflow
when the operators are constructed. Also disable travial
simplification rules that would create such overflow.
For instance x[*200][*2] will not become x[*400] anymore.
* python/spot/impl.i: Catch std::overflow_error.
* tests/core/equals.test, tests/python/except.py: Add test cases.