androidmk: strip LOCAL_PATH from export_include_dirs and local_include_dirs

Sort LOCAL_INCLUDE_DIRS values into local_include_dir include_dirs based
on whether they are prefixed with $(LOCAL_PATH)/, and strip $(LOCAL_PATH)/
from export_include_dirs.

Change-Id: I20f9f0f8385088660855c7ccf85b7933ff2dcd44
2 files changed