- gutted cache1d. The old file system is gone, excepr for klistpath, which still gets used in a few places.

- consolidated the 3 identical S_OpenAudio implementations. The replacement code is disabled for the time being because it needs a rewrite. The replacement logic is uses is a bit too volatile.
- removed the old GRP scan code.

source/build/src/common.cpp

@@ -71,36 +71,6 @@ int32_t G_CheckCmdSwitch(int32_t argc, char const * const * argv, const char *st
     return 0;
 }
 
-// checks from path and in ZIPs, returns 1 if NOT found
-int32_t check_file_exist(const char *fn)
-{
-#ifdef USE_PHYSFS
-    return !PHYSFS_exists(fn);
-#else
-    int32_t opsm = pathsearchmode;
-    char *tfn;
-
-    pathsearchmode = 1;
-    if (findfrompath(fn,&tfn) < 0)
-    {
-        char buf[BMAX_PATH];
-
-        Bstrcpy(buf,fn);
-        kzfindfilestart(buf);
-        if (!kzfindfile(buf))
-        {
-            initprintf("Error: file \"%s\" does not exist\n",fn);
-            pathsearchmode = opsm;
-            return 1;
-        }
-    }
-    else Xfree(tfn);
-    pathsearchmode = opsm;
-
-    return 0;
-#endif
-}
-
 
 //// FILE NAME / DIRECTORY LISTS ////
 void fnlist_clearnames(fnlist_t *fnl)