Fixed compilation issues with clang.
Added 'ui_events' logging option.
Added logging of requested pieces.
Fixed type in IPv6 option.
Added underscores to the log messages to make it easier to parse.
Reverted code that got accidentally committed.
Added request time to block transfers.
Refactored Delegator slots to TR1 functions.
Minor changes to request list.
Cleansed up TransferList.
Added unit tests for request list.