PATCH: PR libjava/32078: Update libtool in classpath

[Paolo Bonzini]

> This patch + my libtool.m4 hack work for me on Linux/x86-64 with
> "make", "make check" and "make install".
> 
> I didn't update libjava/HACKING nor touch lt* files in classpath since
> I don't know much about classpath. Someone who is familiar with
> classpath should look into them.

I'll let the Java maintainers (hi Tom :-) remark about this.

Paolo