subversion-1.9.12 tests successful on Linux

[Nathan Hartman]

Same comment as before on modifying get-deps.sh to pull zlib 1.2.11
from https://www.zlib.net/zlib-1.2.11.tar.gz.

Platform: Linux (Debian "Stretch") x86_64

Summary of test results:
  2225 tests PASSED
  83 tests SKIPPED
  45 tests XFAILED (1 WORK-IN-PROGRESS)
SUMMARY: All tests successful.