normalize file headers across **/*.{h,c}

i3bar/include/ucs2_to_utf8.h

@@ -1 +1,15 @@
+/*
+ * vim:ts=4:sw=4:expandtab
+ *
+ * i3 - an improved dynamic tiling window manager
+ * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
+ *
+ * ucs2_to_utf8.c: Converts between UCS-2 and UTF-8, both of which are used in
+ *                 different contexts in X11.
+ */
+#ifndef _UCS2_TO_UTF8
+#define _UCS2_TO_UTF8
+
 char *convert_utf8_to_ucs2(char *input, int *real_strlen);
+
+#endif