Adds Zygote.initNativeState

This patch replaces three seperate native initialization functions with
a single function, reducing the number of times we need to cross the JNI
boundary.  In addition this loads an empty performance profile for the
zygote to address b/129704892.

Bug: 129704892
Test: make & boot
Test: Treehugger
Change-Id: I0413f554e0963a714e0b4de3196d31ffe6775a3a