cvs pull from krasimir & simon

  from Neil Mitchell (fixed by Krasimir):
  
  On Windows, the path can be path;"c:\ghc\ghc-6.4\bin";restofpath, and
  thats still a valid path with GHC in it. Cabal doesn't find ghc with
  the quotes in, removing them does find it though.

SimonMar:
  Add Distribution.Program to exposed-modules

Distribution/Compat/FilePath.hs

@@ -351,15 +351,22 @@ commonParent paths@(p:ps) =
 -- | The function splits the given string to substrings
 -- using the 'searchPathSeparator'.
 parseSearchPath :: String -> [FilePath]
-parseSearchPath path = split searchPathSeparator path
+parseSearchPath path = split path
   where
-    split :: Char -> String -> [String]
-    split c s =
-      case rest of
-        []      -> [chunk] 
-        _:rest' -> chunk : split c rest'
+    split :: String -> [String]
+    split s =
+      case rest' of
+        []     -> [chunk] 
+        _:rest -> chunk : split rest
       where
-        (chunk, rest) = break (==c) s
+        chunk = 
+          case chunk' of
+#ifdef mingw32_HOST_OS
+            ('\"':xs@(_:_)) | last xs == '\"' -> init xs
+#endif
+            _                                 -> chunk'
+
+        (chunk', rest') = break (==searchPathSeparator) s
 
 -- | The function concatenates the given paths to form a
 -- single string where the paths are separated with 'searchPathSeparator'.

package.conf.in

@@ -18,10 +18,11 @@ exposed-modules:
 	Distribution.PackageDescription,
 	Distribution.ParseUtils,
 	Distribution.PreProcess,
+	Distribution.PreProcess.Unlit,
+	Distribution.Program,
 	Distribution.Setup,
 	Distribution.Simple,
 	Distribution.Version,
-	Distribution.PreProcess.Unlit,
 	Distribution.Simple.Build,
 	Distribution.Simple.Configure,
 	Distribution.Simple.GHCPackageConfig,