Log Message:
Update to 1.4.3:

1.4.3 - 2010-02-01

   This is a scheduled bugfix release.
     * Mercurial license has changed from GPLv2 to GPLv2+
     * speed up copy detection in merge, status, and diff
     * templates: fix relative path expansion on style setting
     * merge: fix merging of already-merged subrepos
     * summary: fix i18n issue reporting clean working directories
     * hgweb: improve IIS PATH_INFO handling
     * relink: Windows support