Bug#47350 Support innodb plugin without separate shared object

Add a _commented_ workaround for Bug#47350. The full solution is tricky
to get right as explained in the bug report. It is not worth the effort
to extend the deprecated autotools framework to support conflicting
plugins and would be too risky for MySQL 5.1 (GA).

storage/innodb_plugin/plug.in

@@ -17,6 +17,9 @@
 MYSQL_STORAGE_ENGINE(innodb_plugin,, [InnoDB Storage Engine],
         [Transactional Tables using InnoDB], [max,max-no-ndb])
 MYSQL_PLUGIN_DIRECTORY(innodb_plugin, [storage/innodb_plugin])
+# Enable if you know what you are doing (trying to link both InnoDB and
+# InnoDB Plugin statically into MySQL does not work).
+#MYSQL_PLUGIN_STATIC(innodb_plugin, [libinnobase.a])
 MYSQL_PLUGIN_DYNAMIC(innodb_plugin,  [ha_innodb_plugin.la])
 MYSQL_PLUGIN_ACTIONS(innodb_plugin,  [
   AC_CHECK_HEADERS(sched.h)