[8u20] Request for approval: JDK-8029979 Allow multiple calls to DropTargetDropEvent.acceptDrop()

[Petr Pchelko]

Hello,

Please approve the backport of the fix to jdk8u-dev.

The bug:
https://bugs.openjdk.java.net/browse/JDK-8029979
The webrev:
http://cr.openjdk.java.net/~anthony/8-3-acceptDrop-8029979.2/
The review thread:
http://mail.openjdk.java.net/pipermail/awt-dev/2013-December/006637.html
The jdk 9 changeset:
http://hg.openjdk.java.net/jdk9/client/jdk/rev/abb550b84d5d

Thank you. 
With best regards. Petr.