Switch to the bz2 version of the libpng archive - some older system tar don't get .xy
Switch to the bz2 version of the libpng archive - some older system tar don't get .xy

berkus/cocotron,liruqi/cocotron,berkus/cocotron,berkus/cocotron,liruqi/cocotron,berkus/cocotron,liruqi/cocotron,liruqi/cocotron