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/Lock.hs

@@ -12,10 +12,10 @@ import Command
 import qualified Annex.Queue
 import qualified Annex
 	
-cmd :: [Command]
-cmd = [notDirect $ withOptions annexedMatchingOptions $
+cmd :: Command
+cmd = notDirect $ withOptions annexedMatchingOptions $
 	command "lock" paramPaths seek SectionCommon
-	"undo unlock command"]
+	"undo unlock command"
 
 seek :: CommandSeek
 seek ps = do