ASTAT v1.20

Added CRITICAL to PREP_GLOBAL.
Altered OnDamage() to add to critical hits count durring the PvE/PvP
check. Now adds to frame and PvE/PvP critical hits count.
Added SLASH table for storing slash commands.
Added SLASH.SearchMobs() for searching through STATS.MOBS for whatever
text it is passed.
Bound SLASH.SearchMobs() to "/astat".
Finished ShowStat(). Now will display Frame, PVP, PVE, and Player (the
sum of PVP and PVE) stats.