Log Message:
Update to 0.54:

0.54 Sat Nov 29 11:47:10 PST 2014
 - Reverted an old patch with 0.53. Unreverted.

0.53 Fri Nov 28 09:20:08 PST 2014
 - Fix for
   https://bitbucket.org/xi/libyaml/issue/10/wrapped-strings-cause-assert-f
   ailure