Moved most of the file type detection from cbm_dir.c into a new function

called _cbm_filetype().
Added an assembler include file with the file type definitions from cbm.h.
Added a first implementation of readdir() for the CBMs.


git-svn-id: svn://svn.cc65.org/cc65/trunk@5669 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/cbm/opendir.c

@@ -20,7 +20,7 @@ DIR* __fastcall__ opendir (const char*)
     /* Setup file name and offset */
     d.name[0] = '$';
     d.name[1] = '\0';
-    d.offs    = 0;
+    d.off     = 0;
 
     /* Open the directory on disk for reading */
     d.fd = open (d.name, O_RDONLY);