Description of problem:
Eclipse 3.1 needs classes from ant >= 1.6.3 to build.  This is, unless we ship
the pre-built ant jars that come with Eclipse.  We don't want to do this anymore :)

Version-Release number of selected component (if applicable):
N/A

How reproducible:
Always

Steps to Reproduce:
1. try to build Eclipse 3.1 with all of ant's jars symlinked to those in
/usr/share/java.
  
Actual results:
    [javac] 1. ERROR in
/home/overholt/cvsdist/eclipse/devel/eclipse-3.1.0_fc/plugins/org.eclipse.ant.core/src_ant/org/eclipse/ant/internal/core/ant/EclipseDefaultExecutor.java
    [javac]  (at line 17)
    [javac]     import org.apache.tools.ant.Executor;
    [javac]            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    [javac] The import org.apache.tools.ant.Executor cannot be resolved


Expected results:
Compilation succeeds.

Additional info: