imagemagick/tiff lib - inverted tiffs since upgrade

[Olivier Mueller]

Hello,

I just spent some time with an issue: after a "standard" upgrade (by
luck on a test server), the image generation/conversion part of a
webpage is not working correctly anymore: pictures (which are
dynamically re-sized with pecl-imagick) are simply inverted (but only
TIFF's).

Before:

ImageMagick-nox11-6.4.9.3 Image processing tools
gd-2.0.35,1         A graphics library for fast creation of images
pecl-imagick-2.2.1_1 Provides a wrapper to the
ImageMagick/GraphicsMagick librar
tiff-3.8.2_3        Tools and library routines for working with TIFF
images

After:

ImageMagick-nox11-6.5.5.10 Image processing tools
gd-2.0.35_2,1       A graphics library for fast creation of images
pecl-imagick-2.3.0  Provides a wrapper to the ImageMagick/GraphicsMagick
librar
tiff-3.9.2          Tools and library routines for working with TIFF
images


I tried to downgrade some or all of these ports with portsdowngrade, but
without luck until now (there are many dependencies). Maybe somebody
around is having the same issue and an idea how to fix it? 

Regards,
Olivier