- fix a declaration omission in 3/<grp.h> - add missing 8/<err.h> - simplify 8/<stdio.h> - update 9/ headers to the latest Bionic versions - fix a typo in android_native_app_glue.h - use __BEGIN_DECLS .. __END_DECLS whenever possible. - remove C++-style comments from headers Change-Id: I58b98b3973cde494436206194ba33416a11ca8ee