Fix some tests and do some cleanup.

test/parse/constant_buffer.golden

@@ -0,0 +1,14 @@
+(program	
+ (constant_buffer camera
+  [(:= projection float4x4) 
+   (:= view float4x4)])
+
+ (fun vertex vs_main -> float4 (@position)
+  [(:= pos float4 (@position))] 
+  (:= mv float4 (mul camera.view pos)) 
+  (:= mvp float4 (mul camera.projection mv)) 
+  (return mvp))
+
+ (fun pixel ps_main -> float4 (@target)
+  [] 
+  (return (float4 0.5 0.5 0.5 1))))

test/parse/field_without_type_specifier.golden

@@ -1,4 +1,4 @@
-test/field_without_type_specifier.shd:2,0: error: Expected type specifier after field name.
+test/field_without_type_specifier.inx:2,0: error: Expected type specifier after field name.
     x := 5.0;
        ^
 

test/parse/property_rename.golden

@@ -0,0 +1,11 @@
+(program	
+ (properties props
+  [(:= color float4)])
+
+ (fun vertex vs_main -> float4 (@position)
+  [(:= pos float4 (@position))] 
+  (return pos))
+
+ (fun pixel ps_main -> float4 (@target0)
+  [] 
+  (return props.color)))