Basic support for scoring by program speed. Fixed bug in pile-up when casting large numbers to int
exit once first solution is found
bug fix in math stack
removed scoring by program speed (i.e. number of operations)
Compute program score from output accuracy and program length. Can adjust relative bias with brevity-weight option. Tidy program options code using macro
Group options together by category and add max-programs and exit-on-solution options. Now keep running unless exit-on-solution given
Move timing code into Timer and fix div by zero bug (who wrote this rubbish anyway?!)
Exit on sigint unless --pause-on-sig-int flag given
Added param-test script to run solver with various combinations of parameters
tweak profiler build flags for operf
with qtcreator project
Merge branch 'factories'