introduced some more stats counters, and transitioned some stats logging over to them
remove settings that no longer are used
counter for incoming connections
log what types the active disk job fences are
fix graceful pause issue
merge graceful pause fix from aio
remove one more unused setting
fix storage unit test
read from sockets in the network thread pool as well
fix disk queue counter bug
abort read jobs queued up on pieces when shutting down
log the number of failed hash checks to session_stats
improve verbose logging for piece picking
merged piece request fix from RC_0_16
merged changes from trunk
fix to add_tracker
fix suggest piece issue
some verbose logging fixes
make encryption related enums available even when not building with encryption enabled
merge header fix from libtorrent_aio