On svn-auth-x509 branch: format cert fingerprints in the traditional style.
I.E. upper-case hex digits, colon separated every 2 bytes of the hex output.

* subversion/include/svn_x509.h
* subversion/libsvn_subr/x509info.c
  (): Include <apr_md5.h>, <apr_sha1.h> and <svn_string.h>
  (svn_x509_fingerprint_to_display): New function for formatting certificate
   fingerprints.

* subversion/svn/auth-cmd.c
  (show_cert): Use svn_x509_fingerprint_to_display() instead of 
   svn_checksum_to_cstring_display().

* subversion/tests/libsvn_subr/x509-test.c
  (test_svn_x509_fingerprint_to_display): New test for 
   svn_x509_fingerprint_to_display().
  (test_funcs): Add test_svn_x509_fingerprint_to_display to test list.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/svn-auth-x509@1617095 13f79535-47bb-0310-9956-ffa450edef68