Update android-20 wchar.h up to bionic state.

Corresponding changes in bionic:
Ia9bd0785bc42c7b46e2bb6c3d9b9a9d3f769d983
I5abdc7cc3c27c109b7900c94b112f18a95c35763

Change-Id: Ie86fd15226fe552b6f0e60c24debbe1d79f7a332
Signed-off-by: Arseniy Antonov <arseniy.antonov@intel.com>
1 file changed