[REVISED] JDK 9 doc-api-only RFR of 6791812: (file spec) Incompatible File.lastModified() and setLastModified() for negative time

[Brian Burkhalter]

This is a continuation / merge of two previous RFRs:

6791812: http://mail.openjdk.java.net/pipermail/core-libs-dev/2017-May/047787.html
8180767: http://mail.openjdk.java.net/pipermail/core-libs-dev/2017-May/047809.html

An updated patch which folds the second change into the first is here:

http://cr.openjdk.java.net/~bpb/6791812/webrev.00/

If this is approved I will update the corresponding CCC request and after eventually pushing the patch will resolve 8180767 as a duplicate.

Thanks,

Brian