Update to 1.5.4:

This is a scheduled monthly minor bugfix release.

    * dispatch: include Python version in traceback
    * push: update help
    * status: avoid performance regression when no .hgsub is present
    * clone: fix performance issue with hardlinks and Windows shares
    * hgweb: fix race in refreshing repo list (issue2188)
    * hgrc: clarify that hgrc keys can be overridden and sections can be split
    * eol: new extension for managing file newlines based on a
      version controlled configuration file
    * pager: fork and exec pager as parent process with /bin/sh -c
    * rebase: stress that only local changesets should be rebased
    * convert/svn: close gettags() log stream (issue2196)
    * record: check that we are not committing a merge before patch selection

(wiz)