[9] RFR of 8065109: (fs spec) Files.newBufferedWriter doesn't specify SecurityException for DELETE_ON_CLOSE option

[Brian Burkhalter]

Please review at your convenience:

Issue:	https://bugs.openjdk.java.net/browse/JDK-8065109
Patch:	http://cr.openjdk.java.net/~bpb/8065109/webrev.00/

This is a doc-only change which adds to the specifications of the Files.newBufferedWriter methods that checkDelete() will be invoked when the DELETE_ON_CLOSE option is specified. Some tests were added to corroborate the foregoing as well as newBufferedReader behavior.  A CCC request will need to be filed.

Thanks,

Brian