gcj: remove aliases for local variables

[Tom Tromey]

>>>>> "Michael" == Michael Koch <konqueror@gmx.de> writes:

>> The bytecode front-end of gcj has long produced worse debug
>> information than the source front-end, partly due to the problem of
>> representing debug information for local variables.  

Michael> Is it possible or worth to backport this to the 4.1 branch?

It is possible but I tend to lean against it.
I'm open to an argument for it though.

Tom