use SDL2 as ifdef symbol because we're not really sdl1.3 compatible, change the compatibility layer, drop unused code, add some documentation
MISC_DIR := $(call my-dir)
LOCAL_PATH := MISC_DIR
include $(MISC_DIR)/libfreetype/Android.mk
include $(MISC_DIR)/liblua/Android.mk
include $(MISC_DIR)/libtremor/Android.mk
include $(MISC_DIR)/libphysfs/Android.mk
include $(MISC_DIR)/libphyslayer/Android.mk