Also adapt libcutils to the bionic change that was necessary for this.
Bug: http://b/35201172
Test: ran tests
Change-Id: I72a98b70b03d23e958b46778b505fbd5c86c32ae
Makes it easier to write correct code in a world where the maximum
property key/value lengths change.
Bug: http://b/23102347
Test: libbase_test64
Change-Id: I100f00904221bbcef9e8786a4e6e30428039bb49