* mkvers.sh: Avoid "-dontuse" tags.

* path.cc (path_conv::check): Set exec state based on known situations.
* path.cc (mount_item::fnmunge): New function.
(mount_item::build_win32): New function.
(mount_info::conv_to_win32_path): Use build_win32 to build windows path.
* path.h (mount_item::fnmunge): Declare new function.
(mount_item::build_win32): Ditto.
* sys/mount.h (MOUNT_ENC): Define.

winsup/cygwin/shared_info.h

@@ -31,6 +31,8 @@ class mount_item
   void init (const char *dev, const char *path, unsigned flags);
 
   struct mntent *getmntent ();
+  void fnmunge (char *, const char *);
+  void build_win32 (char *, const char *, unsigned *, unsigned);
 };
 
 /* Warning: Decreasing this value will cause cygwin.dll to ignore existing