[interchange] Fix for restrict_allow which was being clobbered by default values.

commit 8ba9a07d0f0098b5cae6cb4400bf8ead5f4aa91b
Author: Sam Batschelet <[email protected]>
Date:   Thu May 5 11:09:09 2016 -0400

    Fix for restrict_allow which was being clobbered by default values.

 lib/Vend/Table/Editor.pm |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/lib/Vend/Table/Editor.pm b/lib/Vend/Table/Editor.pm
index 141eed3..de9eb7a 100644
--- a/lib/Vend/Table/Editor.pm
+++ b/lib/Vend/Table/Editor.pm
@@ -916,7 +916,11 @@ sub display {
 			last METAMAKE;
 		}
 
-		$opt->{restrict_allow} ||= $record->{restrict_allow};
+		if ($record->{restrict_allow}) {
+			my %restrict_allow;
+			@restrict_allow{grep /\S/, split / /, $opt->{restrict_allow} . ' ' . $record->{restrict_allow}} = ();
+			$opt->{restrict_allow} = join ' ', sort keys %restrict_allow;
+		} 
 #::logDebug("formatting prepend/append/lookup_query name=$opt->{name} restrict_allow=$opt->{restrict_allow}");
 		for(qw/append prepend lookup_query/) {
 			next unless $record->{$_};