Removed xercesImpl.jar and xml-apis.jar from upstream source. See also:
        https://www.redhat.com/archives/fedora-cvs-commits/2005-June/msg00419.h
        tml
    Specifically,
    | $ bunzip2 apache-ant-1.6.5-src.tar.bz2 | $ tar -vf
        apache-ant-1.6.5-src.tar --delete apache-ant-1.6.5/lib/xercesImpl.jar |
        $ tar -vf apache-ant-1.6.5-src.tar --delete
        apache-ant-1.6.5/lib/xml-apis.jar | $ mv apache-ant-1.6.5-src.tar
        apache-ant-1.6.5-RHCLEAN.src.tar | $ bzip2
        apache-ant-1.6.5-RHCLEAN.src.tar