Upgrading From NAnt 0.84+ to NAnt 0.85 rc4

I converted our nightly and integration builds from NAnt 0.84 (with some local mods) to NAnt 0.85 rc4 today. Overall, the upgrade was pretty painless. There were several changes that I had to make to our build file to make it work, plus there were many warnings that I wanted to remove after trying things out. Here's the list of things I did:

• Copied the support dlls from the NAnt contrib project into the nant/bin directory. This was required for several support tasks and attributes. It also makes it easier to upgrade the build file later since everything will be available.
  
• Copied support tasks created locally into the nant/bin directory. These tasks were still compatible with the new version of NAnt, and didn't even require a rebuild.
• Used to have to set an environment variable with inline C# code, but we can now take advantage of the setenv command. This even speeds up the build slightly since the dll that sets the env. variable doesn't have to be compiled and loaded.
  
• Changed all includes and excludes to include and exclude respectively. There were many filesets in the build file. This was by far the most common change. This was not required, but removed many warnings.
  
• Changed all user in vssget and vsslabel to username. Again, this was not required, but generated deprication warnings.
  
• Had to add some code to ensure the write-only bit was off before touching some files to change the timestamp (this was necesssary because of making sure IIS saw the webservice files as new). This was a required change due to some new behavior in NAnt.
  
• Used to have some code to remove a service before we installed it for Smoke Tests. With the newer NAnt (in the contrib project), there is a service::is-installed() check we can use. This eliminates severa lof the warnings we used to get on our Smoke Tests. This was a nice enhancement made possible by the new check.
  
• In our nunit2 tasks, we formerly used haltonerror attributes. These are now "failonerror".
• In our Acceptance Tests, we formerly only used the basedir attribute. With the newer NAnt, we now need to set both the basedir and workingdir attributes. This is necessary only for programs that expect data/config files to be in the executable directory. If running a program that takes no input, this would not be necessary. This was a required change to allow the tests to run.
  
• All of the nunit (aka Nunit1) test suites are tagged as depricated, and generate warnings in the build logs. I like this because it will encourage us to upgrade those tests over the next while.