add sanity checks for makefile parameters
add sanity checks for makefile parameters

lwahlmeier/avian,minor-jason/avian,joshuawarner32/avian,dicej/avian,ucdseniordesign/avian,marcinolawski/avian,ucdseniordesign/avian,MaartenR/avian,ucdseniordesign/avian,minor-jason/avian,lwahlmeier/avian,ucdseniordesign/avian,bgould/avian,dicej/avian,joshuawarner32/avian,marcinolawski/avian,joshuawarner32/avian,bigfatbrowncat/avian-pack.avian,lwahlmeier/avian,minor-jason/avian,bigfatbrowncat/avian-pack.avian,lostdj/avian,bgould/avian,lostdj/avian,joshuawarner32/avian,marcinolawski/avian,MaartenR/avian,marcinolawski/avian,lostdj/avian,bigfatbrowncat/avian-pack.avian,dicej/avian,bigfatbrowncat/avian-pack.avian,lostdj/avian,bgould/avian,bgould/avian,MaartenR/avian,MaartenR/avian,lwahlmeier/avian,minor-jason/avian,dicej/avian