Version tracking

I just noticed there is a standard for installing dependancies, explained here: [1]

I did not follow this when installing tools, and this should be followed as a standard.

I learned in from an email to galaxy-dev

  a) I hadn't set tool_dependency_dir as I didn't know about it
  b) if I had set it, I was installing tools to
  $SW/tool-name/version-number/ but the default tool wrappers in
  galaxy-dist don't have version numbers set, so they will just look in
  $SW/tool-name/ .
  Can I suggest this be added to the wiki somewhere under the Admin
  pages? Apologies if it's there, I couldn't find it except under News
  Briefs at http://wiki.g2.bx.psu.edu/News%20Briefs/2010_11_24?highlight=%28tool_dependency_dir%29