travis: check if cppcheck-htmlreport works with xml2 + --inconclusive output.
travis: add another check for xml2 + inconclusive + verbose.
Fixed #5077 (False positive: Comparison of boolean result with relational operator ((X + (Y < 0)) <= b))
Merge pull request #180 from matthiaskrgr/travis

travis: check cppcheck-htmlreport compatibility with --inconclusive and --verbose flags
Testother: split up a large testfunction, no functional change.
Tokenizer:simplifyMathFunctions: added support for acos[f|l] functions.
Test that there is no segfault in CheckOther::checkZeroDivisionOrUselessCondition when the SymbolDatabase is invalid. Ticket: #5045
Fix Travis tests

This fixes a bug introduced in #180.
Fixed #5080 ((error) Internal error. Token::Match called with varid 0. Please report this to Cppcheck developers)
Merge pull request #181 from myint/fix

Fix Travis tests
cppcheck-htmlreport: PEP8 fixes.