Restore build with perl 5.8.8

MGf_LOCAL was introduced by perl commit a5063e7cd8fef802efd25ffe9df2c3748f4254f6 in 5.9.3 and back-ported to 5.8.9.

Based on a patch from https://stackoverflow.com/a/49521058/11510760

git-svn-id: https://svn.apache.org/repos/asf/perl/modperl/trunk@1868115 13f79535-47bb-0310-9956-ffa450edef68
1 file changed