Thanks for doing this. It's sufficiently tricky (as you discovered) for
someone to grab a revision of openjdk that is closest to having been an
"official release") that it's a valuable service.
I've also spent some time reading the hg tag tea leaves in the past.
Some of those early "u" releases
Tarballs for all OpenJDK 7u releases are now available at:
https://java.net/projects/openjdk7/downloads
The most recent release is OpenJDK 7u85 build 02:
https://java.net/projects/openjdk7/downloads/download/openjdk7u85-b02.tar.xz
SHA256: 2d8df143c02e15e015350e08ae88eee474c07f1ff24897068a8c36ef0