(svn_errno_t): Add SVN_ERR_FS_NOT_SINGLE_PATH_COMPONENT.  It was already being used in dag.c, someone probably just forgot to add it here.
(svn_errno_t): Add SVN_ERR_FS_NOT_SINGLE_PATH_COMPONENT.  It was already
being used in dag.c, someone probably just forgot to add it here.

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