Players who die are safe from PvP for 1 hour

Creates a new player flag, PFLAG_TEMPSAFE. This flag is activated for innocent players under 100hp who are not faction soldiers upon taking death penalties (has to lose HP on death, i.e. 100% death penalty). The flag stays on for an hour, or until the player logs off after leaving the underworld and prevents the player from engaging in PvP.

This seems to work locally however may need more testing. I wasn't able to test the enemy guild scenario.

Before certain people inevitably ask why, this is in direct response to a PK waiting at player corpses when they know there are no hunters online/all AFK so they can double-kill the player coming back for their newbie loot. As long as we have people like that playing, we need pull requests like this. Lets not utterly waste all of our time discussing why; however if there is an issue with a particular scenario that should be exempt from this, or an issue with the one hour timer, please post comments about those.