[[ Cleanup ]] Add some disambiguating parentheses in common headers.
[[ Cleanup ]] Explicitly cast char->int when used as subscript.
[[ Cleanup ]] libgraphics: pthread_key_t is not a pointer type.
[[ Cleanup ]] libgraphics: More -Wconversion-null fixes.
Merge branch 'develop' into peter-b/misc-cleanup.
[[ Cleanup ]] Add some more disambiguating parentheses for && within ||.
[[ Cleanup ]] Remove unnecessarily verbose MCLog calls.
Merge pull request #1386 from peter-b/misc-cleanup

[[ Cleanup ]] Silence some common Linux build noise.