6526860: (fc) FileChannel.position returns 0 when FileOutputStream opened in append mode

[Alan Bateman]

This one came up on the core-libs-dev mailing list last night [1].  When 
opened for append mode, FileChannel's position() will return 0 if 
invoked prior to writing to the file. It doesn't really make sense to 
use the position methods with files opened for append, the getChannel 
defined by the stream classes does specify that the position be the file 
size when opened for append so this should be fixed. The webrev with the 
changes to fix this are:

http://cr.openjdk.java.net/~alanb/6526860/webrev/

Thanks,
Alan.

[1] 
http://mail.openjdk.java.net/pipermail/core-libs-dev/2011-February/005920.html