+ /* figure out if a person can make a call:
+ $what in 0,30,60,90,120 = points of the call
+ $hash = the hash of the person who wants to make the call
+
+ return values:
+ 0 can't make that call
+ 1 can make the call
+ 2 can make the call, but this is the last chance to do so...
+ */
+