javadoc classes moved to gjdoc and vm/reference cleanups

[Mark Wielaard]

Hi,

I finally moved the GPLed classes from com/sun/javadoc to the gjdoc CVS
from the GNU Classpath tools project.
<http://www.gnu.org/software/cp-tools/>

I also cleaned up the (buggy) vm/reference classes from the gnu.vm.stack
and their counterparts ExecutionStack and StackFrame in gnu.java.lang
since they are not actually part of the VM interface anyway and people
should be using java.lang.StackTraceElement now.

NEWS file and build files have been updated accordingly.
If your build breaks try doing the magic auto* dance:

        aclocal; autoheader; automake; autoconf

And re ./configure. If things still don't work for you after that please
yell and scream so that I can fix it.

Cheers,

Mark