add EU:F77 dump test

MANIFEST

@@ -79,6 +79,7 @@ pgfun.c
 PGPLOT.xs
 README
 t/00-report-prereqs.t
+t/eu-f77-dump.t
 t/lut.t
 t/pdl-graphics.t
 t/t1.t

t/eu-f77-dump.t

@@ -0,0 +1,14 @@
+use strict;
+use warnings;
+use Test::More;
+use ExtUtils::F77;
+
+pass "ok";
+
+my $mod = 'ExtUtils::F77';
+
+is $mod->testcompiler, 1, 'testcompiler method returns 1';
+is $mod->runtimeok, 1, 'runtime libs found';
+diag "Method: $_, ", explain $mod->$_ for qw(runtime trail_ compiler cflags);
+
+done_testing;