- Moved (u)mount prototypes from unistd.h to sys/mount.h.

- Prepared mount system call to accept multiple mount flags
   instead of just read_only (however, it remains backwards
   compatible).
 - Updated the man mount(2) to reflect new header file usage. 
 - Updated badblocks, newroot, mount, and umount commands to use the
   new header file.

include/sys/mount.h

@@ -0,0 +1,21 @@
+/* <sys/mount.h>
+ * definitions for mount(2) 
+ */
+
+#ifndef _MOUNT_H
+#define _MOUNT_H
+
+#define MS_RDONLY	0x001	/* Mount device read only */
+#define MS_REUSE	0x002	/* Tell RS to try reusing binary from memory */
+
+
+/* Function Prototypes. */
+#ifndef _ANSI_H
+#include <ansi.h>
+#endif
+
+_PROTOTYPE( int mount, (char *_spec, char *_name, int _mountflags,
+                                                char *type, char *args) );
+_PROTOTYPE( int umount, (const char *_name)                             );
+
+#endif /* _MOUNT_H */