Adding flextile patch

patch/flextile.h

@@ -0,0 +1,18 @@
+static void flextile(Monitor *m);
+static void mirrorlayout(const Arg *arg);
+static void rotatelayoutaxis(const Arg *arg);
+static void setflexlayout(const Arg *arg);
+static void setflexsymbols(Monitor *m, unsigned int n);
+
+/* Named flextile constants */
+#define LAYOUT 0
+#define MASTER 1
+#define STACK 2
+#define SPLIT_VERTICAL 1   // master stack vertical split
+#define SPLIT_HORIZONTAL 2 // master stack horizontal split
+#define SPLIT_CENTERED_V 3 // centered master vertical split
+#define SPLIT_CENTERED_H 4 // centered master horizontal split
+#define LEFT_TO_RIGHT 1    // clients are stacked horizontally
+#define TOP_TO_BOTTOM 2    // clients are stacked vertically
+#define MONOCLE 3          // clients are stacked in deck / monocle mode
+#define GRID 4             // clients are stacked in grid mode