Updates

Ready Process List:  Nea sinarthsh pu epistrefei to priority queue.

Scheduler: To update total waiting time ine malon la8os. 8a ta pume
@skype. Kalw ti nea sinarthsh pu ekana gia to total waiting time.
Epistrefei integer, dn iksera ti na to kanw opote to afisa apla etsi ke
vlepume. Epishs afisa merika kena anamesa stis entoles gia na fenonte
ligo pio ka8ara sto mati otan tis diavaza. An sas pirazei alakste to.

Statistics :  To update total waiting time dn to xriazomaste mallon, 8a
diksei.
Ekana mia nea sinarthsh, i opia pernei ti ready queue k to xrono sto
roloi , sarwnei tis diergasies ke ipologizei to sinoliko xrono anamonis
ekini ti stigmh. (auto ine to total waiting time simfwna me tin
ekfwnhsh).

Auta :P