RFR: 8029837: NPE seen in XMLDocumentFragmentScannerImpl.setProperty since 7u40b33

[Aleksej Efimov]

Hello,

Please review the fix [1] for the following bug: 
https://bugs.openjdk.java.net/browse/JDK-8029837
The problem was discovered during usage of not compatible old JAXB/XJC 
classes on the stack with latest JDK source (starting from 7u40 
release). The problem is that the JAXP XML_SECURITY_PROPERTY_MANAGER and 
SECURITY_MANAGER properties was not initialized by the XJC task code: 
new regression test recreates the similar condition.
XML related regression tests and JCK tests passes with proposed fix.

Thank you,
Aleksej

[1] Webrev: http://cr.openjdk.java.net/~aefimov/8029837/9/webrev.00/