8527 tty buffer/queue sizes should be larger

*** 71,80 ****
--- 71,85 ----
  #define ARG_MAX         _ARG_MAX64      /* max length of arguments to exec */
  #else   /* _LP64 */
  #define ARG_MAX         _ARG_MAX32      /* max length of arguments to exec */
  #endif  /* _LP64 */
  
+ 
+ /*
+  * These two symbols have their historical values, the actual buffer is
+  * larger.
+  */
  #ifndef MAX_CANON
  #define MAX_CANON       256     /* max bytes in line for canonical processing */
  #endif
  
  #ifndef MAX_INPUT