corrected error in Data_Thread for case 200, did not signal SR_Hub via post(sem)
Case 100: in Data_Thread - increase counter of processes by 1
error, when case 200, socket not closed
cleaning up printf statements
Error should be goto END

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Wrong placement of setting SR_Mode = T for case 200
updated CSHELL
disabled Sem_Wait in Data_Thread and Sem_Post in SR_Hub

This sequence caused deadlock
   Data_Thread posted sempahore and SR_hub was waiting for it.
   What happened is that Data_Thread was faster and stole
   this semaphore which made SR_hub and all its SR_Data_Thread wchich
   were to be terminated to wait indefinitely
Added comment to deisabled Sem_wait in data_Thread

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