Test regexp compiling to make sure it doens't crash like bug 16127

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


PASS !!/\)[;s]+/ is true
PASS /[/ threw exception SyntaxError: Unterminated regular expression literal '/[/'.
PASS /[a/ threw exception SyntaxError: Unterminated regular expression literal '/[a/'.
PASS /[-/ threw exception SyntaxError: Unterminated regular expression literal '/[-/'.
PASS !!/(a)/ is true
PASS !!/(a){1,3}/ is true
PASS No crashes, yay!
PASS successfullyParsed is true

TEST COMPLETE