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/Fix.hs

@@ -18,12 +18,13 @@ import Utility.Touch
 #endif
 #endif
 
-cmd :: [Command]
-cmd = [notDirect $ noCommit $ withOptions annexedMatchingOptions $
-	command "fix" paramPaths seek
-		SectionMaintenance "fix up symlinks to point to annexed content"]
+cmd :: Command
+cmd = notDirect $ noCommit $ withOptions annexedMatchingOptions $
+	command "fix" paramPaths
+		SectionMaintenance "fix up symlinks to point to annexed content"
+		(commandParser seek)
 
-seek :: CommandSeek
+seek :: CmdParams -> CommandSeek
 seek = withFilesInGit $ whenAnnexed start
 
 {- Fixes the symlink to an annexed file. -}