added package 'fog' simplified logging wiht Python (log4j) levels
initial stub for sql_proxy
start exploring postgresql protocol
ergo_proxy: use standard return order (error last) for receiveUntilTimeout
sql_proxy: further experiments
added parse_pb
minor changes to fog suggested by golint
fetch_server: initial shell
fetch_server: renamed connection_handler
create common server routine for both fetch_server and storage_server.
added stub of storage_server
parse_pb added Constrcut to construct a PB type from as normal type
add client_handler and pb_output_generator to start handling client
messages
remove unused local stubs of connection_handler
rename parse_pb to pb (it does more than parse)
fake challenge/response for login
propoerly display Message.Sequence
give fetch_server and storage_server each their own ClientHandler, for customization
pb: slighty better list types
individual client handlers and GetValue() for deeper parsing