Revert "Get rid of _t suffix"

In the very least, a change like this requires discussion on the list.

The naming convention is goofy and it causes a massive merge problem.  Something
like this _must_ be presented on the list first so people can provide input
and cope with it.

This reverts commit 99a0949b720a0936da2052cb9a46db04ffc6db29.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/sdl.c b/sdl.c
index 0c65867..42b6f37 100644
--- a/sdl.c
+++ b/sdl.c
@@ -235,7 +235,7 @@
 
 #include "sdl_keysym.h"
 
-static a_kbd_layout *kbd_layout = NULL;
+static kbd_layout_t *kbd_layout = NULL;
 
 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 {