Revert "update client.c from branch semaphores"

This reverts commit 137dea8fd71d9d1f4f07d5aa41d70173cfc112f4.
Revert "Revert "update client.c from branch semaphores""

This reverts commit 7daa0c32a24f17e13fcece867d5a404150dda3ed.
Merge branch 'master' of https://github.com/ael-code/remote-reservation-system