Fix SVN-4653: SVN_LOCALE_DIR incorrectly interpolated when prefix is not set explicitly.
Fix SVN-4653: SVN_LOCALE_DIR incorrectly interpolated when prefix is not set explicitly.

* configure.ac: When calculating SVN_LOCALE_DIR, adjust the test for
   the default value to account for the new ${dataroot} variable
   that was introduced by autoconf 2.60.

Found by: Michael Osipov


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1761334 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion