Log message:
Changes 6.6.9.8:
* Fixed some cut-and-paste errors in new png.c code that caused PNG8
  reductions to fail.

Changes 6.6.9.8:
* Add various Option Flags, and fix option skip counts for plus forms
  of simple operators where plus form is the same as minus form.
  For example the incorrect counts produces a weird error, and posible
  future segmentation fault in a command like  convert rose: +border show:

Changes 6.6.9.7:
* Fix FX default for interpolation to Bilinear.
* Fix pixel interpolation for -draw image over (reference
  http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=18612).
* Write the proper bKGD chunk value in grayscale PNG images (reference
  http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=18624).
* Added Inverse method for Sparse Color Interpolation

Log message:
When using option djvu, include djvulibre in buildlink3.mk to avoid
link failures.

Log message:
png shlib name changed for png>=1.5.0, so bump PKGREVISIONs.

Log message:
Updated buildlink dependencies

Log message:
Changes 6.6.6.5:
* Make the PNG encoder always rebuild the palette, to avoid losing
  transparency when it is out of sync with the pixel data.
  Eliminated CompressColormapTransFirst() since the palette is already
  compressed and sorted by opacty now when it's recreated.
* Account for virtual canvas for the -flip / -flop options.
* Also for -transpose and transverse options
* Support -metric fuzz option.

Changes 6.6.6.4:
* Replace IsMagickColorSimilar() which provides the Fuzz Factor threshold
  function.  Note function does not calculate 'distance' in total but
  short-circuits when threshold is reached for faster processing.
* Ordered Dithered handling of Alpha channel was incorrect - fixing
  Bug was introduced v6.6.5-6

Changes 6.6.6.3:
* Fixed two more cases where the PNG encoder lost transparency.

Changes 6.6.6.2:
* Affine multiplication reversed when translating.

Changes 6.6.6.2:
* Revised the "c7x7b" and "c7x7w" ordered-dither maps to be \ 
complementary
  to each other.

Changes 6.6.6.1:
* Add support for -evaluate-sequence median.

Changes 6.6.6.0:
* Fixed two more cases where the PNG encoder lost transparency.
* The policy.xml sets not-to-exceed resource values (e.g. policy memory limit
  1GB, -limit 2GB exceeds policy maximum so memory limit is 1GB).
* Support NCC (normalized cross correlation) compare metric.

Log message:
Shlib major bumped from 3 to 4 at update of ImageMagick-6.6.4.1.
Bump ABI_DEPENDS (and recursive bump).

Log message:
update to 6.6.4.1
many improvements and fixes - see the changelog

Log message:
Fix whitespace problem in Makefile.

Log message:
Bump PKGREVISION for libpng shlib name change.
Also add some patches to remove use of deprecated symbols and fix other
problems when looking for or compiling against libpng-1.4.x.

Log message:
update to 6.6.1.5
many new features and fixes - too much to list here