[mtasc] multiple variable assignments in single expression

[dchang at nochump.com]

>> Yep still get it with beta4 but now finding that it occurs only when
>> trying to dump into a swf.  Running 'mtasc Test.as' (Test.as being
>> your example class) compiles fine but 'mtasc -swf test.swf -header
>> 100:100:30 Test.as' gives the error.
>>
>> David
>
> Exact.
> This is now fixed.
> I just added a new beta4 zip that corrects the problem.
>
> Nicolas
> --
> MTASC : no more coffee break while compiling

That sure was quick :)