merged python fix from RC_0_16
more client_test cleanup
put legend on right side
add request-piece balance analysis to session stats parser
fix logging
minor logging cleanup
merged encryption patch from RC_0_16
fix error handling when directories in the target are missing
fixed error handling of missing directories in download path
merged changes from trunk
revert mistake
merged changes from trunk
fix issue where peers could get stalled never reading from the socket
TODO comment for a significant performance improvement
fix the fix for stalling peers