Open log files as text files on Windows

Open log files as text files on Windows

By giving the "t" flag to _fdopen() on Windows, the file will be
opened in a "translate mode", where it will take care of converting
\n to \r\n, and also look for the CTRL-Z mark when opening the log
file in append mode.

Reference:
<http://msdn.microsoft.com/en-us/library/dye30d82%28VS.80%29.aspx>

Thanks to Alon Bar-Lev for pointing out this solution.

Reported-by: Thomas Reifferscheid
Signed-off-by: David Sommerseth <davids@redhat.com>
Acked-by: Gert Doering <gert@greenie.muc.de>