RFC: Moving Java PRs to Gcc database

[Tom Tromey]

The gcj project has long maintained its own Gnats database.  Since the
Java runtime library has been merged into the gcc tree, I think we
should also merge the Gnats database.

My plan for doing this has a few steps:

1. Make a new "libgcj" category in the Gcc database.
2. Disable the ability to make new PRs in the Java database
3. Move open/analyzed PRs from the Java database to the gcc database

I have written a script which can move PRs from one database to
another.  This script seems to work, so I'm ready to do this as soon
as I get an answer back.

The answer I need are:

* Is it ok to make a new category?  (I can do the work once I have the
  authorization.)
* Is there anything inadvisable about moving the old PRs over?
  Any concerns I haven't addressed?

Benjamin, this script is easily hackable to move the libstdc++ PRs as
well.  I can forward this script to anybody who wants it.  It requires
direct login access to gcc.gnu.org to be used.

Tom