[Patch][Pungi] log file formating

[Joel Andres Granados]

Hi list:

I have noticed that the resulting log file contains some strange looking 
output.  Mainly the output of createrepo and mksquashfs from the 
buildinstall call.  AFAIK the problem is caused because these two 
applications use the '\r' in there outputs. When using the 
universal_newlines option the log file improves a little bit.
The diff is attached
regards.
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