New function `clojure-fill-paragraph'.  Fix docstrings and indentation.

* clojure-mode.el (clojure-font-lock-keywords): Fix indentation.
(clojure-defun-style-default-indent)
(clojure-omit-space-between-tag-and-delimiters): Fix docstring.
(clojure-mode-map): Remove the `C-c M-q' keybinding.
(clojure-mode-menu): Remove entry for `clojure-fill-docstring'.
(clojure-space-for-delimiter-p, clojure-no-space-after-tag): Fix
docstring.
(clojure-mode): Use `clojure-fill-paragraph'.
(clojure-fill-paragraph): New function.
(clojure-font-lock-def-at-point)
(clojure-font-lock-extend-region-def)
(clojure-font-lock-extend-region-comment, clojure-forward-sexp):
Fix docstring.
(define-clojure-indent): Fix indentation.
(clojure-defun-indents): Fix docstring.
(clojure-char-at-point): Fix indentation.
(clojure-fill-docstring): Fix docstring.
(clojure-fill-docstring): Indentation clean-up.
Set `indent-tabs-mode' to nil in clojure-mode.el.