Merge "Add -Wno-strict-prototypes to suppress new warnings." am: 30b69e13b4 am: a6124811ee am: 45e205b144

Original change: https://android-review.googlesource.com/c/platform/external/python/cpython2/+/1403104

Change-Id: I3c5dbc2fccfad6390212c1db74345083ce83c3b4