[slim-vim] Changelog for July

[Larry Clapp]

Fri Jul 14 11:04:34 EDT 2006  Larry Clapp <larry at theclapp.org>
  * Added Vim FFI for tabpagenr and tabpagebuflist

  vim:tabpagenr takes an optional argument, but if you provide it, it
  must be NIL or string= "$", or it's silently ignored.

Fri Jul 14 10:03:56 EDT 2006  Larry Clapp <larry at theclapp.org>
  * Make VIM:VAR work with the new VIM:EXPR; delete VAR-S and VAR-N

Fri Jul 14 09:26:55 EDT 2006  Larry Clapp <larry at theclapp.org>
  * Make VIM:EXPR work with more types of Vim data: numbers, strings, lists

  Doesn't work with Dictionaries yet.

  - A Vim number may become a fixnum or a bignum.
  - A Vim string becomes a Lisp string.
  - A Vim list becomes a Lisp list (recursively).
  - A Vim dictionary displays an error ("E685: Internal error:
    vim_type_to_cl_object(VAR_DICT)")

  Changed vim:funcall to only call parse-integer on the returned value
  if the returned type is STRING *and* the given function is supposed
  to return an integer.  (Previously vim:expr *always* returned
  strings.)

  Also added some comments and docstrings.