[interchange] Fix unqualified relative include with removal of '.' from $PERL5LIB

[David Christensen]

commit e32dfbfdd5a80791be04111f72b2f9c9a669ea3c
Author: David Christensen <david at endpoint.com>
Date:   Thu Nov 2 15:52:54 2017 -0500

    Fix unqualified relative include with removal of '.' from $PERL5LIB

 Makefile.PL |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.PL b/Makefile.PL
index 8b514ff..1fe4bfc 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -35,7 +35,7 @@ $VERSION = eval { require './_ic_version' } || '5.12.0';
 my @os_hints;
 eval {
 	# gets package 'mvhints'
-	require 'hints.pl';
+	require './hints.pl';
 	@os_hints = mvhints::get_hints();
 };