Your following packages in the repository suffer from broken dependencies:
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The results in this summary consider Test Updates!
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package: mingw32-libpng-1.2.37-3.el6.noarch from fedora-epel-6-ppc64
unresolved deps:
mingw32(msvcrt.dll)
mingw32(zlib1.dll)
mingw32(kernel32.dll)
mingw32-filesystem >= 0:63
mingw32-runtime