* scripts/mir-setup/mir-setup:

 * scripts/mir-setup/mir-setup:
   + When getting DB name/user/pass, use shell variables rather than
     hardcoded uk.
   + Create $USER and $TOMCATGROUP, add $USER and $TOMCATUSER to
     $TOMCATGROUP.
   + if $MIRGITROOT or $SITEGITROOT are defined, checkout mir or
     site from git instead of CVS.
   + Download cities.inc.
   + Configure temporary SSL snake-oil cert.
   + Create links in $INSTALLDIR/mir/lib to needed jar files:
     * servlet-2.3: link to /usr/share/java
     * rt: link to /etc/mir-setup/lib. This is so mir-choose-java
       can change that link rather than making changes in several places.
   + Pass TOMCAT_HOME to ant.
   + Fixup jar links in mir deployment to match config above.
   + Create empty abuse.properties.
   + Restart tomcat.
 * README: updated to mention mir-prepare and conf/tomcat4.