RFR 8005281: (props) loadFromXML with small XML parser provider does not detect bad DOCTYPE

[Joe Wang]

The cause of the LoadAndStoreXML test failure appeared to be that of 
8005281 that Alan just fixed. Before the 8005281 patch, I was able to 
get the tests to pass when I isolated the relevant tests (that is, copy 
LoadAndStoreXML and remove other test cases). After the 8005281 patch, 
LoadAndStoreXML passed in its original form.

I've also added a few more invalid xml files, plus international 
characters to testLoadAndStore.

Webrev:
http://cr.openjdk.java.net/~joehw/jdk8/8005280/webrev/

Thanks,
Joe