_cdio_osx.c: add getting hw info. Get some read/write capabilities and

disc info.

*generic*: split off CD discmode classification so it can be used by
OSX

cdio: env -> p_env

lib/generic.h

@@ -1,5 +1,5 @@
 /*
-    $Id: generic.h,v 1.1 2004/08/10 11:58:15 rocky Exp $
+    $Id: generic.h,v 1.2 2004/08/28 09:15:41 rocky Exp $
 
     Copyright (C) 2004 Rocky Bernstein <rocky@panix.com>
 
@@ -149,6 +149,11 @@ extern "C" {
   */
   discmode_t get_discmode_generic (void *p_user_data );
   
+  /*! 
+    Same as above but only handles CD cases
+  */
+  discmode_t get_discmode_cd_generic (void *p_user_data );
+  
   void set_cdtext_field_generic(void *user_data, track_t i_track, 
 				track_t i_first_track,
 				cdtext_field_t e_field, const char *psz_value);