Fixed minor typos in documentation and code comments across multiple files.
Patch clj-1304-v2.diff dated Jan 11, 2014 is identical to Vipul's patch doc-comment-typos.diff dated Dec 9, 2013, except it applies cleanly to latest master. The only changes are that it removes the part of the patch for files in the ASM library, which was updated in a recent commit to Clojure master.
reopen so that I can set the fix version which didn't get set.
re-close now that fix version is set