Subversion 1.12.1, 1.10.5, 1.9.11 up for testing/signing

[Julian Foad]

The 1.12.1, 1.10.5, 1.9.11 release artifacts are now available for 
testing/signing.
Please get the tarballs from
  https://dist.apache.org/repos/dist/dev/subversion
and add your signatures there.
Thanks!

- Julian