[NUI] make GridLayout.Orientation default value as Horizontal (#1828)

Before commit c04eaacb3186b0ea9e499d7a930b10e074134d32, child was added
from left to right by default. but now they are added from top to
bottom.
This patch reverts auto-placement rule to keep backward compatibility.

diff --git a/src/Tizen.NUI/src/public/Layouting/GridLayout.cs b/src/Tizen.NUI/src/public/Layouting/GridLayout.cs
index 228f03258c1a3256f33745f654fae6a28ec48ad5..82f344649a545730a0c306645917921640c3a1f4 100755 (executable)
--- a/src/Tizen.NUI/src/public/Layouting/GridLayout.cs
+++ b/src/Tizen.NUI/src/public/Layouting/GridLayout.cs
@@ -75,7 +75,7 @@ namespace Tizen.NUI
         public static readonly BindableProperty VerticalAlignmentProperty = BindableProperty.CreateAttached("VerticalAlignment", typeof(Alignment), typeof(GridLayout), Alignment.Start, propertyChanged: OnChildPropertyChanged);
 
         private const int CellUndefined = int.MinValue;
-        private Orientation gridOrientation = Orientation.Vertical;
+        private Orientation gridOrientation = Orientation.Horizontal;
         private int columns = 1;
         private int rows = 1;
         private float columnSpacing = 0;