uses bundled libpng14 when it detects libpng15 to allow succesful compilation. it's a workaround, but best we got.
amd64 ok
amd64 : ok
x86 stable
amd64 stable
alpha shouldn't stabilize this as it's suboptimal quality, but ppc needs this for kdesdk-scripts
ppc stable (tested by an user from Freenode by my req)