Mercurial has all plugins disabled by default. So put this into ~/.hgrc

[extensions]
hgext.mq =
hgext.graphlog = 
hgext.hgk = 

This enables the patch queue extensions as well as the hg glog and hg view commands. To set the correct submitter I have

export HGUSER="$GIT_AUTHOR_NAME <$EMAIL>"

in ~/.bashrc.