[WWcvs] pg: added Exporter to the inheritance tree of PGcore

[Mike G. v. a. <we...@ma...>]

Log Message:
-----------
added Exporter to the inheritance tree of PGcore

Modified Files:
--------------
    pg/lib:
        PGcore.pm

Revision Data
-------------
Index: PGcore.pm
===================================================================
RCS file: /webwork/cvs/system/pg/lib/PGcore.pm,v
retrieving revision 1.4
retrieving revision 1.5
diff -Llib/PGcore.pm -Llib/PGcore.pm -u -r1.4 -r1.5
--- lib/PGcore.pm
+++ lib/PGcore.pm
@@ -18,10 +18,11 @@
 use strict;
 BEGIN {
 	use Exporter;
-	our @EXPORT_OK = qw( not_null);
+	our @EXPORT_OK = qw(not_null);
 }
 our $internal_debug_messages = [];
 
+our @ISA = qw(Exporter);
 use PGanswergroup;
 use PGresponsegroup;
 use PGrandom;