Remove obsolete Tru64 UNIX V5.1B support

[David Daney]

On 03/06/2012 05:14 AM, Rainer Orth wrote:
> "Joseph S. Myers"<joseph@codesourcery.com>  writes:
>
>>>    There's one particular issue: the change to java/io/File.java required
>>>    my to regenerate the .class file in classpath.  I've used Sun javac
>>>    -target 1.5 for that and hope I got it right.
>>
>> I'd have expected regeneration to use GCJ built to use ECJ, though I don't
>> know.
>
> I've never tried this.  Given that the .class file lives below
> libjava/classpath and has to be synced with upstream Classpath anyway, I
> hope the Java maintainers will take care of that.
>

This it documented (although perhaps badly) in install/configure.html

You should use --enable-java-maintainer-mode, this will cause the build 
to use ecj and gjavah to regenerate all the generated files in the 
'standard' manner.

> At least with the javac-built File.class I had no libjava testsuite
> failures.
>

It probably results in a usable .class file, but is error prone and not 
very reproducible.

David Daney