cppcheck Files

New checks in core cppcheck:
 * missing return in function
 * writing overlapping data, detect undefined behavior
 * compared value is out of possible type range
 * [perf] Copy elision optimization can't be applied for `return std::move(local)`
 * file can not be opened for read and write access at the same time on different streams

Various improvements:
 * Color output for diagnostics are added for unix-based platforms.
 * Added symbolic analysis for ValueFlow. A simple delta is used to compute the difference between two unknown variable. 
 * Rules using the "define" tokenlist can also match #include as well.
 * Library `<function>` tags can now use `<container>` tag, so free functions that accept containers such as `std::size`, `std::empty`, `std::begin`, `std::end`, etc. can specify the `yields` or `action` for the container.
 * Library `<smart-pointer>` tag can specify a `<unique>` tag for smart pointers that have unique ownership. Cppcheck now warns about dangling references to smart pointers with unique ownership.
 * Fixed problems when --cppcheck-build-dir is used, that should now work better. It is recommended to use --cppcheck-build-dir to speedup Cppcheck analysis.
 * htmlreport can now output author information (using git blame)
 * More warnings about variables that is not const but can be const

Misra C 2012 compliance has been "completed"
All Misra C 2012 rules have been implemented except 1.1 , 1.2 and 17.3. Including the rules in amendment 1 and amendment 2.
The rules 1.1 and 1.2 must be checked with a compiler.
The rule 17.3 can be checked by a compiler, for instance GCC.