PATCH: PR libjava/32078: Update libtool in classpath

[Paolo Bonzini]

>>  > > I'm happy if you are.  I just don't know enough about libtool to come
>>  > > to any conclusion.  I do know that you can't compile Java source code
>>  > > during configury.
>>  > 
>>  > Can I compile and link Java byte code during configure?
>>
>> Yes, you can.
> 
> Do I need Java runtime library to create an executable from Java
> byte code?

No, you don't.  You need to Java runtime library *in bytecode form*, but 
that's present under libjava/classpath/lib.

(BTW, it seems that we're talking about two patches.  1) Copying 
libtool.m4 to classpath -- that's fine.  2) Hacking around libtool.m4 to 
use gcc instead of gcj -- that's not.)

Paolo