tidy up policy bugs

[Anthony Towns <aj@azure.humbug.org.au>]

# Unseconded proposals should be marked "[PROPOSED]" and have severity 
# wishlist:
#      Issue raised
#          wishlist bug opened in BTS, with a subject of "[PROPOSED] ...".
#          This is the pre discussion period, when the idea is kicked
#          around, and polished.  

retitle 79538 [PROPOSED] FDL is missing from common-licenses
severity 79538 wishlist

retitle 72849 [PROPOSED] policy: advises to use -s flag to install in wrong place
severity 72849 wishlist

retitle 73620 [PROPOSED] Policy example about INSTALL is wrong
severity 73620 wishlist

retitle 76028 [PROPOSED] section 4.7.4 is poorly worded
severity 76028 wishlist

severity 78341 wishlist
severity 78014 wishlist
severity 78012 wishlist
severity 66023 wishlist
severity 70565 wishlist
severity 77400 wishlist

# Typos and such should probably be "minor" (it at least makes it easier to
# see what proposals are under discussion etc)

severity 70442 minor
severity 70634 minor
severity 70643 minor
severity 77645 minor
severity 78809 minor
severity 78822 minor

thanks