#659 [smplayer-themes] Replace some PNG images that are broken with libpng 1.6

[Evangelos Foutras]

This is similar to the smplayer bug #571. [1]

The following PNG images are broken with libpng 1.6 and need to be replaced with the ones in smplayer-themes-fixed-pngs.tar.gz (attached):

smplayer-themes-14.9.0/themes/Oxygen-Refit/rewind10s.png
smplayer-themes-14.9.0/themes/Oxygen-Refit/unload.png
smplayer-themes-14.9.0/themes/Oxygen-Refit/shuffle.png
smplayer-themes-14.9.0/themes/Oxygen-Refit/speed.png
smplayer-themes-14.9.0/themes/Oxygen/unload.png
smplayer-themes-14.9.0/themes/Oxygen/shuffle.png
smplayer-themes-14.9.0/themes/Oxygen/speed.png
smplayer-themes-14.9.0/themes/Gartoon/rewind1m.png

[1] https://sourceforge.net/p/smplayer/bugs/571/