in 4.9, make sure we set our prerequisites to 4.9 also. refs: ffce213 closes ticket #4308
…d support for it from wzscript.
(prevents unwanted overflow behavior --don't use signed types if we don't know for sure that they will not cause undesired behavior) For example, range should never have a negative value, and on a overflow, it would now have a negative value. refs: 5458323 closes ticket:4301 fixes ticket:4179