drill

9b351c94 - DRILL-3483: Clarify CommonConstants' constants. [CommonConstants, DrillConfig, PathScanner]

DRILL-3483: Clarify CommonConstants' constants. [CommonConstants, DrillConfig, PathScanner] Renamed constants. Documented constants. Removed extraneous "public static final" (redudant and abnormal since in interface). Edit: Unwrapped a no-longer-long line. closes #88