/*
 * call-seq:
 *    CPU.freq
 *
 * Returns an integer indicating the speed (i.e. frequency in Mhz) of the cpu.
 *
 * Not supported on OS X.
 *--
 * Not supported on OS X currently. The sysctl() approach returns a bogus
 * hard-coded value.
 *
 * TODO: Fix for OS X.
 */
static VALUE cpu_freq(VALUE klass){