Java compilation warnings

[John W. Eaton]

On  6-Dec-2012, Rik wrote:

| There is still quite a bit of work to do in importing the Java package into
| core and bringing it up to core standards.  I'm busy trying to improve the
| Autotools part of the process.  I'm hoping I can get some help with the
| other bits.
| 
| For starters, when I compile __java__.cc I get the warnings listed below. 
| I think it would be short work for someone to silence most of them by
| removing the old-style casts and using C++ style casting.

Thanks for working on the autotools issues related to java.

Since I'm the one who wanted to move the java package into Octave,
I'll try to take care of these other problems.

jwe