add commands to retrieve vslot parameters/status
refactor parseref and made many more commands reflist aware. as well as fixes for r_sawpref and a few other functions

commands that are now reflist aware include
* r_signal
* r_add_status
* r_kill
* r_resurrect
* r_pickup
* r_additem
* r_drop
* r_remove
* r_equip
* r_trigger
* r_destroy
* r_on_map
* r_spawn_critter
* r_spawn_obstacke
* r_spawn_item
* r_spawn_container
* r_spawn_trigger
* r_spawn_platform