rebuilt configure after r28182 changed AC_UNIX_STDIO_64 for Mac OSX stat64 deprecation

git-svn-id: https://svn.osgeo.org/gdal/trunk@28194 f0d54148-0727-0410-94bb-9a71ac55c965
Reverting all of r28194 except configure change.

git-svn-id: https://svn.osgeo.org/gdal/trunk@28195 f0d54148-0727-0410-94bb-9a71ac55c965
Merge branch 'trunk' into trunk_vc12