Change file mode to 666:
* src/common.h (OPEN_MODE): New definition.
* src/File.cc
* src/Util.cc
* src/Directry.cc
* src/AbstractDiskWriter.cc
Change the level of log message "download aborted" to debug:
* src/PeerAbstractCommand.cc (execute)
* src/RequestGroup.h (RequestGroup): Initialized
_hintTotalLength to 0.
* src/TrackerWatcherCommand.cc
(createCommand): Sleep some seconds after request failed.
If tracker request fails more than value of
PREF_TRACKER_MAX_TRIES,
then abort tracker request.