Close connection on EOF

Close connection on EOF
this makes downloading some asx files from MS
streaming servers work again (they would hang on eos).
The http request header property connection:close is needed for _some_
1.1 HTTP servers to close the connection at the end of file.
patch by Ronald S. Bultje % rbultje A ronald P bitfreak P net%
Original thread:
Date: Mar 3, 2007 10:48 PM
Subject: [Ffmpeg-devel] [PATCH] close connection on end-of-file

Originally committed as revision 8221 to svn://svn.ffmpeg.org/ffmpeg/trunk