jar-checksums should only generate checksums for third party jars

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1368969 13f79535-47bb-0310-9956-ffa450edef68

lucene/common-build.xml

@@ -1583,6 +1583,11 @@ ${tests-output}/junit4-*.suites     - per-JVM executed suites
       <copy todir="${jar-checksum.temp.dir}" flatten="true">
         <fileset dir="@{srcdir}">
           <include name="**/*.jar"/>
+          <!-- todo make this something passed into the macro and not some hardcoded set -->
+          <exclude name="build/**"/>
+          <exclude name="dist/**"/>
+          <exclude name="package/**"/>
+          <exclude name="example/exampledocs/**"/>
         </fileset>
       </copy>