started converting to use optparse-applicative

This is a work in progress. It compiles and is able to do basic command
dispatch, including git autocorrection, while using optparse-applicative
for the core commandline parsing.

* Many commands are temporarily disabled before conversion.
* Options are not wired in yet.
* cmdnorepo actions don't work yet.

Also, removed the [Command] list, which was only used in one place.

Command/Dead.hs

@@ -16,10 +16,10 @@ import Command.Trust (trustCommand)
 import Logs.Location
 import Remote (keyLocations)
 
-cmd :: [Command]
-cmd = [withOptions [keyOption] $ 
+cmd :: Command
+cmd = withOptions [keyOption] $ 
 	command "dead" (paramRepeating paramRemote) seek
-		SectionSetup "hide a lost repository or key"]
+		SectionSetup "hide a lost repository or key"
 
 seek :: CommandSeek
 seek ps = maybe (trustCommand "dead" DeadTrusted ps) (flip seekKey ps)