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Mads Kiilerich

db: drop most lazy joins

Lazy joins will in some cases turn small selects into joins that returns huge
amounts of redundant data - increasingly bad as the repo size increases.

Lazy joins should only be used after careful analysis and with comments
explaining the case.

This change will make some operations faster and probably also make some
operations slower. Performance regressions would have to be analyzed and
addressed separately ... and differently.

.. _subrepos:

=============================================
working with Kallithea and mercurial subrepos
=============================================

example usage of Subrepos with Kallithea::

    ## init a simple repo
    hg init repo1
    cd repo1
    echo "file1" > file1
    hg add file1
    hg ci --message "initial file 1"

    #clone subrepo we want to add
    hg clone http://rc.local/subrepo

    ## use path like url to existing repo in Kallithea
    echo "subrepo = http://rc.local/subrepo" > .hgsub

    hg add .hgsub
    hg ci --message "added remote subrepo"



In file list of repo1 you will see a connected subrepo at revision it was
during cloning.
Clicking in subrepos link should send you to proper repository in Kallithea

cloning repo1 will also clone attached subrepository.

Next we can edit the subrepo data, and push back to Kallithea. This will update
both of repositories.

see http://mercurial.aragost.com/kick-start/en/subrepositories/ for more
information about subrepositories