Airmines should have been set for 45° bounce - the only reason they weren't I guess is they were a clone of some mine values - and mines use traditional behaviour.
MISC_DIR := $(call my-dir)
LOCAL_PATH := MISC_DIR
include $(MISC_DIR)/liblua/Android.mk
include $(MISC_DIR)/libphysfs/Android.mk
include $(MISC_DIR)/libphyslayer/Android.mk