added semaphored access to the array of prenotation
prepare for matrix semaphores
semaphores organization works :)
make global variables static
added comments
solved threads starvation.
solved warning & caterba
resolve segmentation fault on file name
signal menagment
introduced threads.c to store thread's ip
wrote methods to clean semaphores
inserted all ifndef in header files
program freeze on kill_all_threads() after a sigint
received
added thread name and debug MACRO
saving and restoring reservation from file almost works
now file saving/loading works
file permission flag on open() call was inserted in wrong parameter
added saves before requests performing, to avoid crash issues.
added some comments... just to be clearer :D
preparing for saving...
initial commit for delta diff in backup file
stupid bug fix
fixed update_freep() in fileop.c