[Mageia-dev] Switch lipbng to 1.5?

[Funda Wang]

Hello,

Is there any possibility that we ship libpng 1.5.x as default for
mga2? My idea will be:

* libpng => 1.5.x for default installation
* libpng12, libpng12-devel for old packages which cannot be rebuilt or
some other reasons failing built.

WDYT?

FYI, opensuse and arch switched to libpng 1.4, but 1.4 branch is not
an active branch any more according to [1].

[1]: http://www.libpng.org/pub/png/libpng.html