* external.cc (cygwin_internal): Make v1 mount table access invalid.

* path.cc (mount_info::init): Remove had_to_create_mount_areas initialization.
(mount_info::from_registry): Remove v1 table import.
(mount_info::read_v1_mounts): Eliminate.
(mount_info::import_v1_mounts): Ditto.
* shared_info.h (mount_info): Ditto for both of above.
* sys/mount.h (MOUNT_DEVFS): New enum.
(MOUNT_PROC): Ditto.

winsup/cygwin/shared_info.h

@@ -94,13 +94,10 @@ class mount_info
   int get_cygdrive_info (char *user, char *system, char* user_flags,
 			 char* system_flags);
 
-  void import_v1_mounts ();
-
  private:
 
   void sort ();
   void read_mounts (reg_key& r);
-  void read_v1_mounts (reg_key r, unsigned which);
   void mount_slash ();
   void to_registry ();