Make sure Bzip tests start with a clean sheet

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@272972 13f79535-47bb-0310-9956-ffa450edef68

src/etc/testcases/taskdefs/bunzip2.xml

@@ -2,7 +2,7 @@
 
 <project basedir="." default="cleanup">
 
-  <target name="realTest">
+  <target name="realTest" depends="cleanup">
     <bunzip2 src="expected/asf-logo-huge.tar.bz2" dest="asf-logo-huge.tar" />
   </target>
 

src/etc/testcases/taskdefs/bzip2.xml

@@ -2,11 +2,11 @@
 
 <project basedir="." default="cleanup">
 
-  <target name="realTest">
+  <target name="realTest" depends="cleanup">
     <bzip2 src="expected/asf-logo-huge.tar" zipfile="asf-logo-huge.tar.bz2" />
   </target>
 
-  <target name="testDateCheck">
+  <target name="testDateCheck" depends="cleanup">
     <touch file="asf-logo.gif.bz2"/>
     <bzip2 src="../asf-logo.gif" zipfile="asf-logo.gif.bz2" />
   </target>