use hardcoded namespace

The macro defined namespaces confused the hell out of lupdate and more or less broke translations permanently. Looks like the only way we can do it is to have a hardcoded namespace, which goes against my instinct, but honestly how likely is it that we'll change the namespace anyway (I guess forks might want to do it, but that's their problem ;) )

app/node/input.h

@@ -25,7 +25,7 @@
 #include "keyframe.h"
 #include "param.h"
 
-OLIVE_NAMESPACE_ENTER
+namespace olive {
 
 /**
  * @brief A node parameter designed to take either user input or data from another node
@@ -295,7 +295,7 @@ public:
   QVector<Node*> GetImmediateDependencies() const;
 
 signals:
-  void ValueChanged(const OLIVE_NAMESPACE::TimeRange& range);
+  void ValueChanged(const olive::TimeRange& range);
 
   void KeyframeEnableChanged(bool);
 
@@ -431,6 +431,6 @@ private slots:
 
 };
 
-OLIVE_NAMESPACE_EXIT
+}
 
 #endif // NODEINPUT_H