Patch: gcj documentation

[Tom Tromey]

>> +@item -Wall
>> +This is the same as @code{-Wredundant-modifiers -Wextraneous-semicolon
>> +-Wunused}.

Per> Is this really true?  I.e. are any other non-gcj-specific
Per> warnings implied by -Wall?

As far as I can tell -Wall is entirely handled by each front end.

Per>         This option is used when linking to specify the name of the
Per>         class whose @code{main} method should be invoked when the
Per>         resulting executable is run.

Thanks, I made this change.

Per> The flag is by default on, and there seems to be very little need
Per> to turn it off.  Thus it is true that -fassume-compiled doesn't
Per> work - that does nothing.  The question is whether you want to
Per> document -fno-assume-compiled.

I'm not sure that -fno-assume-compiled works any more either.  I've
never used it, and I don't know that anybody has.  Also, we don't test
it.  I'm just going to delete this comment for now.

>> +@chapter Invoking jcf-dump
>> +@item --javap
>> +Generate output in @code{javap} format.

Per> Should perhaps add:  "The implementation is very incomplete."

Thanks, done.

Tom