Determines if an NPC henchman should level up.
Character to check against.
NPC to level. (Default: OBJECT_SELF)
Returns TRUE if an NPC should level up according to the level of oPC. If oPC's level is greater than or equal to oHenchman's level plus 2, then returns TRUE, otherwise returns FALSE. Note that oPC does not have to be associated as the henchman's master.
NOTE: x0_i0_henchman also contains a function with this exact same name and parameters. However, the x0_i0_henchman version should not be used as all it does is return FALSE.
author: Charles Feduke, editor: Mistress