Report merger does not work

Attempt to merge reports using built javatest.jar shows the error message:

org.xml.sax.SAXParseException: schema_reference.4: Failed to read schema document 'file:/home/ersh/wrk/jt/kenai/trunk/JTHarness-build/binaries/lib/javatest.jar!/com/sun/javatest/report/test_run_report.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.

This is regression of 7105486. As scheme source File instead of InputStream was used, as result it works correctly for unpackaged project (in NetBeans, for example) but does not work for packaged in jar file application.