scripted-diff: Avoid `interface` keyword to fix windows gitian build

Rename `interface` to `interfaces`

Build failure reported by Chun Kuan Lee <ken2812221@gmail.com>
https://github.com/bitcoin/bitcoin/pull/10244#issuecomment-379434756

-BEGIN VERIFY SCRIPT-

git mv src/interface src/interfaces
ren() { git grep -l "$1" | xargs sed -i "s,$1,$2,g"; }
ren interface/            interfaces/
ren interface::           interfaces::
ren BITCOIN_INTERFACE_    BITCOIN_INTERFACES_
ren "namespace interface" "namespace interfaces"

-END VERIFY SCRIPT-

1 files changed, 4 insertions, 4 deletions

diff --git a/src/qt/optionsmodel.h b/src/qt/optionsmodel.h
index 96c6b8fa45..fc1d119a71 100644
--- a/src/qt/optionsmodel.h
+++ b/src/qt/optionsmodel.h
@@ -9,7 +9,7 @@
 
 #include <QAbstractListModel>
 
-namespace interface {
+namespace interfaces {
 class Node;
 }
 
@@ -31,7 +31,7 @@ class OptionsModel : public QAbstractListModel
     Q_OBJECT
 
 public:
-    explicit OptionsModel(interface::Node& node, QObject *parent = 0, bool resetSettings = false);
+    explicit OptionsModel(interfaces::Node& node, QObject *parent = 0, bool resetSettings = false);
 
     enum OptionID {
         StartAtStartup,         // bool
@@ -79,10 +79,10 @@ public:
     void setRestartRequired(bool fRequired);
     bool isRestartRequired() const;
 
-    interface::Node& node() const { return m_node; }
+    interfaces::Node& node() const { return m_node; }
 
 private:
-    interface::Node& m_node;
+    interfaces::Node& m_node;
     /* Qt-only settings */
     bool fHideTrayIcon;
     bool fMinimizeToTray;