Refactor GFI to treat command line files and the i command uniformly. Disable CSE by default in GFI.

src-3.0/GF/Command/Interpreter.hs

@@ -1,5 +1,6 @@
 module GF.Command.Interpreter (
   CommandEnv (..),
+  mkCommandEnv,
   interpretCommandLine
   ) where
 
@@ -21,6 +22,9 @@ data CommandEnv = CommandEnv {
   commands     :: Map.Map String CommandInfo
   }
 
+mkCommandEnv :: PGF -> CommandEnv
+mkCommandEnv pgf = CommandEnv pgf (allCommands pgf)
+
 interpretCommandLine :: CommandEnv -> String -> IO ()
 interpretCommandLine env line = case (pCommandLine (myLexer line)) of
   Ok CEmpty -> return ()