added Readline to GF3 shell (in the same way as GF2, using GFCFLAGS in Makefile)

src-3.0/GF/Devel/GFI.hs

@@ -5,6 +5,7 @@ import GF.Command.Importing
 import GF.Command.Commands
 import GF.GFCC.API
 
+import GF.System.Arch (fetchCommand)
 import GF.Devel.UseIO
 import GF.Devel.Arch
 import GF.Infra.Option ---- Haskell's option lib
@@ -20,8 +21,7 @@ mainGFI xx = do
 loop :: GFEnv -> IO GFEnv
 loop gfenv0 = do
   let env = commandenv gfenv0
-  putStrFlush (prompt env)
-  s <- getLine
+  s <- fetchCommand (prompt env)
   let gfenv = gfenv0 {history = s : history gfenv0}
   case words s of
 

src-3.0/Makefile

@@ -207,7 +207,7 @@ gfc: gf3
 gfi: gf3
 
 gf3:
-	$(GHMAKE) $(GHCOPTFLAGS) -o gf3 GF/Devel/GF.hs
+	$(GHMAKE) $(GHCOPTFLAGS) $(GHCFLAGS) -o gf3 GF/Devel/GF.hs
 	strip $(GF3_EXE)
 	mv $(GF3_EXE) ../bin/