Perl directors changes entry added and minor tidy up

Examples/perl5/callback/runme.pl

@@ -29,7 +29,7 @@ $caller->setCallback($callback);
 $caller->call();
 $caller->delCallback();
 
-print
+print "\n";
 print "Adding and calling a Perl callback\n";
 print "----------------------------------\n";
 

Examples/perl5/check.list

@@ -1,7 +1,9 @@
 # see top-level Makefile.in
+callback
 class
 constants
 constants2
+extend
 funcptr
 import
 multimap
@@ -11,5 +13,3 @@ reference
 simple
 value
 variables
-callback
-extend