need to keep track of position because seeking will change it
need to keep track of position because seeking will change it

svn path=/trunk/; revision=1469

zsx/gmime,GNOME/gmime,zsx/gmime,jstedfast/gmime,zsx/gmime,GNOME/gmime,jstedfast/gmime,jstedfast/gmime,zsx/gmime,GNOME/gmime