cleanup: use modern @property/@foo.setter property specification We can use this now that we're 2.6+, and this is more idiomatic modern Python.

buildrpm: use bash shebang, since we use bash features in the script As suggested by Bryan O'Sullivan.

mac: ignore resource fork when checking file sizes Some evil evil awful tool adds resource forks to files it's comparing. Our Mac-specific code to do bulk stats was accidentally using "total size" which includes those forks in the file size, causing them to be reported as modified. This changes it to only care about the normal data size and thus agree with what Mercurial's expecting.