some more cleanup and code improvement

first working proof of concept version of splitting large protocol me…

…ssages (a lot of bad and quick hack code present which has to be cleaned up)

added extensive logging for the protocol to find the cause of a proto…

…col gets stuck problem

bug fix

do not create a new thread on each client but on blocks of clients ->…

… that should lower the thread overhead

allow more max. number of clients to be connected to the server since…

… with the new multithreaded implementation the capacity of the server should increase