delete cmake-build and distrib in clean target
delete cmake-build and distrib in clean target

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