Walter, I am happy to announce your appointment as maintainer for this port / these ports pending initial technical approval. That could come from Richard or Joseph, for example.
As part of your initial commit, please add your name to MAINTAINERS and submit a news item for our main page as well as an entry for the GCC 4.7 (or 4.8) release notes at htdocs/gcc-4.7/changes.html (cf. http://gcc.gnu.org/cvs.html ). Happy hacking! Gerald