Pullup ticket #4317 - requested by drochner
textproc/libyaml: security update

Revisions pulled up:
- textproc/libyaml/Makefile                                     1.6
- textproc/libyaml/distinfo                                     1.4

---
   Module Name:    pkgsrc
   Committed By:   drochner
   Date:           Wed Feb  5 11:14:07 UTC 2014

   Modified Files:
           pkgsrc/textproc/libyaml: Makefile distinfo

   Log Message:
   update to 0.1.5
   changes:
   -fix buffer overflow (CVE-2013-6393)
   -more hardening and minor fixes

   pkgsrc change: added "test" target
Pullup tickets #4317 and #4318.