Smaller Websocket memory footprint
Smaller Websocket memory footprint

Moved 1Kb of memory from each websocket connection (protocol) object
into a global (static) thread localized storage. The memory was used as
a read buffer and moving the memory away from the protocol object
improves memory footprint at the expense of memory locality.

boazsegev/facil.io,boazsegev/facil.io