subversion-1.12.2: tests successful on Linux

[Nathan Hartman]

Same note as earlier: Modified get-deps.sh to use 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:
  2526 tests PASSED
  97 tests SKIPPED
  87 tests XFAILED (17 WORK-IN-PROGRESS)
SUMMARY: All tests successful.