rename scmutil.user_rcpath to userrcpath

rename scmutil.system_rcpath to systemrcpath

rename scmutil.os_rcpath to osrcpath

merge with stable

merge with crew

merge with stable The change from 7b627923739f (parent 2) is not needed after switching to the new url parser.

rename path_auditor to pathauditor The Mercurial 1.9 release is moving a lot of stuff around anyway and we are already moving path_auditor from util.py to scmutil.py for that release. So this seems like a good opportunity to do such a rename. It also strengthens the current project policy to avoid underbars in names.

revlog: use real Booleans instead of 0/1 in nodesbetween