* Flawfinder support added for C and C++
A minor modification to gcc handler was made to support flawfinder's
single-line output format that does not have a space following the
colon denoting the warning level. gcc handler still passes its
Vader tests after this modification.
* Documentation fixes
* Revert documentation regression
* Added Flawfinder to table of contents
* Removed trailing whitespace
* Follow ALE conventions better
Added additional documentation and Vader tests
A limited number of clang-tidy checks can be used with C, too. I pretty much
copied and refactored the C++ clang-tidy linter, and added some documentation
about C-compatible checks.
