The question of maintainership will need to be decided by the Steering Committee, but before you can become the maintainer you should have established a record of submitting good patches to the port that conform to the GNU Coding Standards etc.; depending on the status of any corporate assignment, you may also need to have personal copyright assignment papers on file at the FSF.
When you have patches to the port ready that make any changes necessary to get it in good working order, you can include the change to config.gcc to remove the deprecation along with those patches, and post the test results for the patched compiler to gcc-testresults (indicating in the test results posting what patches are applied). If any changes required are confined to the crx port or otherwise clearly safe for other targets, you may also be able to remove the deprecation on 4.3 branch. You should plan on getting the patches in - including doing any necessary paperwork and pinging patches needing review as necessary - within the next couple of months; deprecated ports are likely to be removed at that point unless they have seen sufficient activity to revive them. -- Joseph S. Myers [EMAIL PROTECTED]