Description John Arthorne 2002-12-16 11:17:16 EST

Build I20021216

Steps (must use standalone test case)

1) create a project with a file
2) install a builder on the project
3) turn off autobuild
4) modify the file
5) turn on autobuild
6) run an empty operation

Step 6) should cause a build to happen, since the workspace is not fully built,
and autobuild is on.  We currently optimize out this case, because step 6) in
itself does not modify the workspace.  If autobuild has just been turning on, or
the build order has changed, we should always trigger a build.