Fix P2 input when PlayerAutoplay in P1
Merge pull request #352 from hanubeki/input-p2

Fix P2 input when PlayerAutoplay in P1
Lineage reporting for nil commands in RunCommands.  Stricter type checking for FormatPercentScore in PercentageDisplay.
Changed ColorToHex to just use string.format instead of useless number to hexstring to number to hexstring conversion.
Fixed broken else-if chain in Actor::SetEffectClockString.  Changed error to not crash Stepmania.
Minor docs change for effect colors.
Fixed coloring and cropping of RollingNumbers during tweens.
Fixed RollingNumbers to work with corner diffuse colors.  Changed diffuse loops to use NUM_DIFFUSE_COLORS instead of 4.
Created tween queue and functions for BitmapText so the stroke color can be tweened.
Merge pull request #362 from kyzentun/StrokeTween

Tweenable stroke color for BitmapText