Pullup ticket #4243 - requested by he
graphics/png: build fix

Revisions pulled up:
- graphics/png/Makefile                                        1.163
- graphics/png/distinfo                                        1.108

---
  Module Name: pkgsrc
  Committed By: wiz
  Date: Mon Sep 30 18:17:03 UTC 2013

  Modified Files:
  pkgsrc/graphics/png: Makefile distinfo

  Log Message:
  Update to 1.6.6:

  Version 1.6.6 [September 16, 2013]
    Removed two stray lines of code from arm/arm_init.c, again.

(tron)