[X11] Reconcile logical keyboard state with physical state on FocusIn

since the window system doesn't do it for us like other platforms.

This prevents sticky keys and missed keys when going in and out
of focus, for example Alt would appear to stick if switching away
from an SDL app with Alt-Tab and had to be pressed again.

CR: Sam

android-project/jni/Android.mk

@@ -0,0 +1 @@
+include $(call all-subdir-makefiles)

android-project/jni/Application.mk

@@ -0,0 +1,6 @@
+
+# Uncomment this if you're using STL in your project
+# See CPLUSPLUS-SUPPORT.html in the NDK documentation for more information
+# APP_STL := stlport_static 
+
+APP_ABI := armeabi armeabi-v7a x86

android-project/jni/src/Android.mk

@@ -0,0 +1,19 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := main
+
+SDL_PATH := ../SDL
+
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/$(SDL_PATH)/include
+
+# Add your application source files here...
+LOCAL_SRC_FILES := $(SDL_PATH)/src/main/android/SDL_android_main.c \
+	YourSourceHere.c
+
+LOCAL_SHARED_LIBRARIES := SDL2
+
+LOCAL_LDLIBS := -lGLESv1_CM -lGLESv2 -llog
+
+include $(BUILD_SHARED_LIBRARY)

android-project/jni/src/Android_static.mk

@@ -0,0 +1,12 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := main
+
+LOCAL_SRC_FILES := YourSourceHere.c
+
+LOCAL_STATIC_LIBRARIES := SDL2_static
+
+include $(BUILD_SHARED_LIBRARY)
+$(call import-module,SDL)LOCAL_PATH := $(call my-dir)