[RFA] -Wunused -> -Wunused{,-{function,label,parameter,variable,value}}]

[Jeffrey A Law]

  In message <14551.36634.877799.668803@cetus.cygnus.com>you write:
  > 
  > This patch needs a ChangeLog entry, and I would prefer it if the doc
  > entry in invoke.texi were expanded to include and all the new options.  
The invoke.texi documentation definitely needs to be updated before this
patch can be installed.

Andrew -- consider the patch approved once you add the missing bits to
invoke.texi.

jeff