contrib/mpc-hc.cppcheck: Add library and suppressions settings.

Requires cppcheck https://github.com/danmar/cppcheck/commit/24a9da37718a79fa4cabdad59bf71426722e22c7 or newer.
Reindent.
Remove duplicate expression.
Bump copyright year to 2014.
Compilation.txt: update msysGit version.