8u40 rampdown schedule

[Kevin Rushforth]

This is an update on the OpenJFX 8u40 [1] rampdown schedule. These dates 
derive from equivalent JDK 8u40 dates. As a reminder, the deadline for 
getting changes into 8u-dev and having them show up in that week's build 
is 1am Pacific on Monday [2].

Here are the key dates:

8u40 ZBB (Zero Bug Bounce) : Monday, Dec 1
8u40 M4 milestone build : Monday, Dec 8
8u40 RDP2 (rampdown phase 2) : Monday, Dec 15
8u-dev open up for post-8u40 changes: Tuesday, Dec 16.
8u40 repo fork: Wednesday, Dec 17 (based off the build from Monday)

All product bugs currently targeted to 8u40 are expected to be 
addressed, either by fixing or deferring them, on or before our ZBB date 
of Dec 1.

Between Dec 1 and Dec 15 we will be in "rampdown mode" for 8u40, during 
which time all bugs except doc / test bugs will need additional approval 
to go in. The focus will be on critical regressions.

After Dec 15, only release-team approved bugs will be pulled into 8u40. 
Generally this is only show-stoppers or other release critical bugs.

Related to this, I will be opening up a 9-dev repo for FX 9 work 
sometime in the next week or so.

-- Kevin

[1] https://wiki.openjdk.java.net/display/OpenJFX/8u40
[2] https://wiki.openjdk.java.net/display/OpenJFX/Sanity+Testing