BARRIER-replacement
replaced BARRIER - added implementation
uopdated Example Makefile
removing all commented barrier statements

From now on, both Data_THread (Server-Body) and
SR_Data_Threads (SR_hub) are synchronized with
pt_sync and pt_sync_mod rather then barrier.

Will be easier to udpate/change number of Data_Threads and KA and ATDT
mode + number od S/R threads
Added copyrigth statement
temporary commit
removed pt_sync in Data_Thread, Server_Body and Start_Data_Thread

In older version, when spawing Data_Threads, the Start_Data_Thread
had pt_sync() which wait until all Data_Threads were spawned.
After that the Server_Body was waiting on pt_sync() syncing the
loop start with Data_Thread.

Data_Thread dissabled: two pt_sync() befor while() loop
Start_Data_Thread dissabled pt_sync() before return statement
Server_Body: dissabled pt_sync() before open-bind-listen socket