PITR / what directories/files can be ignored?

[Glen Parker <glenebob@xxxxxxxxxx>]

I am continuing to refine my PITR backup script, and there are some 
directories I do not know what to do with.  First off, here are the 
directories/files I am currently ignoring...

pg_xlog  (ours is a symlink, so I ignore it altogether)
pg_log/*
base/*/pgsql_tmp/*
postmaster.opts
postmaster.pid


Can I also ignore any of these? ...

pg_clog/*
pg_multixact/*
pg_subtrans/*
pg_twophase/*


BTW, PITR is pretty much the best thing since sliced bread :D

TIA,

-Glen