OpenJFX 8u-dev and 9-dev repos will be locked on Friday for maintenance

[Kevin Rushforth]

The following OpenJFX repos will be locked tomorrow (Friday) for some 
maintenance:

9-dev/rt
9-dev/tests
8u-dev/rt
8u-dev/tests

Please consider them as read-only mode during the lockout period.

Start time:  07:00 Pacific, Friday, 2016-06-24
End time:  ETA is 13:00 Pacific, but I will send an explicit "all clear" 
message when the maintenance is over

If someone forgets and pushes a changeset during that time, it might get 
lost.

This should not affect the ability to clone or pull during that time (or 
if it does it will only be transiently).

-- Kevin