added something things

I have added:
void queueSetup(pcb*);
void cleanUpPCB();
void queueInit();
void printPCB(pcb*);
****version calls printPCB() right now so it is easy to see things
without changing a bunch of code****
also, class is a keyword, changed it to classs.
this doesnt work. i cant figure out to how to use globals that can be
seen across files. i know extern does this but i cant figure out what i
am doing wrong.