Although the Sather "learning' code is compiling and producing a
working executable, some of the code is producing this warning:
/home/dnormandin/Programming/Sather/sather-1.2.3/System/Platforms/linux/../../Co
mmon/runtime.h:179:0: warning: "isnormal" redefined [enabled by
default] /usr/include/math.h:253:0: note: this is the location of
the previous definition