CLTL tablos and indexos (not really typos)

[Skef Wholey <Wholey@CMU-CS-C.ARPA>]

The symbols Unsigned-Byte and Mod are not listed in the table of "standard type
specifier symbols" on page 43 of CLTL.  These symbols are described on pages 48
and 49 as type specifiers, however.  Neither is listed in the index as a type
specifier (although both have references to Open for the :element-type keyword
argument).  In fact, no type specifier symbols are listed as such in the index.
All this was confusing to a new Common Lisp programmer who was trying to
understand an existing Common Lisp program.

--Skef