Syntax highlight missing symbols and improve consistency of syntax groups.

To do

• Fix mis-grouping of print-method and print-dup.
• Add case* to clojureCond.
• Fix linter errors/warnings.
• Refactor code.
• Complete TODOs?

Current changes

(Note: items suffixed with (new) were never syntax highlighted by Clojure.vim or Vim-clojure-static.)

clojureCond

+ if
+ if*    (new)
+ case*  (new)

clojureSpecial

+ &
+ reify*  (new)
- if
+ letfn*  (new)
+ clojure.core/import*  (new)
- recur
- loop
+ let*    (new)
+ fn*     (new)
+ letfn
- def

clojureRepeat

+ loop*   (new)
+ loop
+ recur

clojureMacro

- letfn

clojureDefine

+ deftype*  (new)
+ def