Windows regrtest failures

6 tests failed:

test_classpathimporter test_java_integration test_marshal test_old_mailbox test_popen test_shutil

• test_classpathimporter - file handles, though not a straightforward fix, org.python.core.ClasspathPyImporter is the culprit
• test_java_integration - jython.bat needs (or 'should' as there's absolutely nothing subprocess can do about it) to strip surrounding quotes from command line arguments
• test_marshal - recursion tests blow out stack. jython.bat sets Xss512k (and posix sets Xss1024k) but windows seems to need Xss1280k to pass
• test_old_mailbox - file handles?
• test_popen - http://bugs.python.org/issue1559298
• test_shutil - apparently java.io.File.delete completely ignores ntfs permissions set by test_on_error???

Also test_mailbox fails horribly and is temporarily disabled from regrtest --expected