Fixed the initial population of the epoc32 tree with rnd bins to deal with the fact that the zips are in a slightly different location. (cf the changes made for Bug 350) Simplified the way in which the setting of sf.spec.package.src.enable is handled - no need to use it to change the zipping template, just use it to control which parts of the template we invoke.

<?xml version="1.0" encoding="utf-8"?>

<diamonds-build>
  <schema>10</schema>
  <tags>
    <tag>${ant['sf.spec.publish.diamonds.tag']}</tag>
  </tags>
</diamonds-build>