reject batch options combined with non-batch options

Reject combinations of --batch (or --batch-keys) with options like --all or
--key or with filenames.

Most commands ignored the non-batch items when batch mode was enabled.

For some reason, addurl and dropkey both processed first the specified
non-batch items, followed by entering batch mode. Changed them to also
error out, for consistency.

Sponsored-by: Dartmouth College's Datalad project

Command/FromKey.hs

@@ -41,7 +41,8 @@ seek :: FromKeyOptions -> CommandSeek
 seek o = do
 	matcher <- addUnlockedMatcher
 	case (batchOption o, keyFilePairs o) of
-		(Batch fmt, _) -> seekBatch matcher fmt
+		(Batch fmt, _) -> batchOnly Nothing (keyFilePairs o) $
+			seekBatch matcher fmt
 		-- older way of enabling batch input, does not support BatchNull
 		(NoBatch, []) -> seekBatch matcher (BatchFormat BatchLine (BatchKeys False))
 		(NoBatch, ps) -> do