SageConstants -- more cleanup

public static final boolean LITE = false;
public static final boolean ENFORCE_EMBEDDED_RESTRICTIONS = false;
public static final boolean PVR = true;
public static final boolean SERVER_FUNCTION = true;
public static final boolean LIBRARY_FUNCTION = true;

ENFORCE_EMBEDDED_RESTRICTIONS is never read, so it can be removed.

All other constants here are read in MANY places but the contant is never updated (and it's final, so, it can't be changed), so it begs the question... Should we remove these?

This is again, in the spirit of clean up. There is lots of if/else blocks using these constants. But if they never change, can/should they be removed? It may help to understand what the function of each of these was supposed to be.