Review request for XML JAXP unit test colocation

[Frank Yuan]

Hi, Joe and All

Thanks for your previous reviews and comments. Per your comments: I added
description for every test, got them running with and without security
manager and fixed the known test issues.  Could you help review the changes
for JAXP unittest co-location again? After your review, I will push the
tests into JDK repo: jaxp/test.

bug: https://bugs.openjdk.java.net/browse/JDK-8043090
webrev: http://sqeweb.us.oracle.com/jsn/users/yc/webrev/
test results:
http://sqeweb.us.oracle.com/jsn/users/yc/result/JTreport/html/index.html

Thanks,

Frank