add FIELD?=GLOB to git-annex view usage

And also to vadd usage.

Also added some other things to the usage that were omitted before to
save space.

Adding even FIELD?=GLOB made the git-annex --help list of commands grow
too wide for an 80 column display. So, removed the description of
parameters from that list of commands.

Sponsored-By: Brock Spratlen on Patreon

CmdLine/Usage.hs

@@ -32,17 +32,13 @@ commandList cmds = concatMap go [minBound..]
 	cmdline c = concat
 		[ cmdname c
 		, namepad (cmdname c)
-		, cmdparamdesc c
-		, descpad (cmdparamdesc c)
 		, cmddesc c
 		]
 	pad n s = replicate (n - length s) ' '
 	namepad = pad $ longest cmdname + 1
-	descpad = pad $ longest cmdparamdesc + 2
 	longest f = foldl max 0 $ map (length . f) cmds
 	scmds = sort cmds
 
-
 {- Descriptions of params used in usage messages. -}
 paramPaths :: String
 paramPaths = paramRepeating paramPath -- most often used