RSB II: Fix attempt to use Alcohol again in P5

Due to the isAlcoholPending flag not being reset, Robert could end up
attempting to use Alcohol again during the final stretch.  Once is
enough, thank you! :o)
RSB II: Further improvements to Phase 5

In order to ensure players always see at least the first four phases,
Phase 5 now doesn't start until RSB's drunkenness wears off; to
compensate for the potential cheapness of the unpredictable changeover,
the P5 opener was changed from Electrocute to Crackdown.  There is more
move variety in P5 now, as well--including a final Desperation Slash.