Fix reopened issue #1997: 'svnadmin verify' should write to stderr in console encoding, instead of assuming UTF-8.
Fix reopened issue #1997: 'svnadmin verify' should write to stderr in
console encoding, instead of assuming UTF-8.

Follow-up to r12687, r12692, and r15391.

Also create new private function consolidating redundant stream
management code from svnadmin dump, load, and verify.

Suggested by: dlr
              julianfoad
              rooneg

* subversion/svnadmin/main.c
  (recode_stream_create): New.
  (subcommand_dump, subcommand_load, subcommand_verify): Use new
  function to create progress feedback stream.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion