allow messages to be procs to minimize unnecessary wire calls
allow messages to be procs to minimize unnecessary wire calls

jkotests/watir,watir/watir,jkotests/watir,titusfortner/watir,titusfortner/watir,titusfortner/watir,watir/watir,jkotests/watir-webdriver,jkotests/watir-webdriver,jkotests/watir,titusfortner/watir-webdriver,titusfortner/watir-webdriver,jkotests/watir,watir/watir,titusfortner/watir,watir/watir