ndk: Fix potential event handling issue in android_native_app_glue

Developers report that concurrent events generated from different
sources/devices can lead to application freezes then ANRs.

See https://code.google.com/p/android/issues/detail?id=41755

where it is suggested that handling all incoming events in
the "process_input" callback solves the issue. Hence this patch
implements the suggestion, however it's unclear whether this
solves the symptom, or the root cause of the problem.

Change-Id: Ic6b0ad05d192763a6d8842c8befcb87db9714a3c
1 file changed