configury: AC_CONFIG_MACRO_DIRS is not released yet!
configury: AC_CONFIG_MACRO_DIRS is not released yet!

* configure.ac (AC_CONFIG_MACRO_DIRS): Replace this...
(AC_CONFIG_MACRO_DIR): ...with the buggy old API call.

Signed-off-by: Gary V. Vaughan <f9023000f29773649f3850298becb9544b5fd6a9@gnu.org>

gvvaughan/specl