Istatd http will now compress all responses if the client supports them.
    * Accept-encoding header sent by client will be taken into account
    * Content-encoding header will be sent to client according to response compression
    * server prefers gzip then zlib (deflate) then uncompressed responses.
config switch to disallow compressing responses
code review feedback. cleanup return values, properly handle return error case in memory coutners, make names clearer, handle bad blacklist configuration
add libboost-iostreams dependency to configure and fix some libboost readme / console innacuracies
update changelog for 0.74