Hi,

I've committed this patch which addresses two minor problems with the 
--gprof option.

1) The change to sidcpuutil.h addresses a problem in which 
--gprof=<file>,cycles was not recognized (i.e. cycles specified with no 
value -- default should be 1).

2) The change to commonCfg.cxx fixes an off-by-one problem which was 
causing an underflow.

Tested on the internal port which exposed the problems.

Dave