[Reverted in r1617225.] On svn-auth-x509 branch: Revert r1616093 (svn_checksum_to_cstring_display2 implementation) -- it's out of the scope of svn-auth-x509 branch and I develop local x509 implementation for formatting cert fingerprints.
subversion/branches/svn-auth-x509/subversion/include/svn_checksum.h