[IMPT] Development switched to sh/jdk

[Aleksey Shipilev]

This is our development repo now:
  http://hg.openjdk.java.net/shenandoah/jdk/

Workspace snapshot:
  https://builds.shipilev.net/workspaces/shenandoah-jdk.tar.xz
   (see https://builds.shipilev.net/workspaces/README.txt for instructions)

CMakeLists for CLion:
  http://cr.openjdk.java.net/~shade/tricks/CMakeLists.txt-shenandoah-jdk

Builds (in progress):
  https://builds.shipilev.net/openjdk-shenandoah-jdk/

Docker (in progress), "latest" tag now points to sh/jdk builds. sh/jdk10 are "10":
  $ docker run -it --rm shipilev/openjdk-shenandoah java -XX:+UseShenandoahGC -Xlog:gc -version

Webrev against upstream:
  https://builds.shipilev.net/patch-openjdk-shenandoah-jdk/

JTReg updates, if you need it:
  https://builds.shipilev.net/jtreg/

I think you can move .hg/patches to rebase your current mq.

sh/jdk10 is now the backports repository, do not push new stuff in there, unless the change is
jdk10-specific. If you are testing current Shenandoah, it makes sense to start building sh/jdk, not
sh/jdk10.

Thanks,
-Aleksey