Move libipchecksum to frameworks/libs/net.

This code is used by the DNS resolver mainline module, so it
should be in a directory that is automerged to sc-mainline-prod,
not in /system/core.

Test: m
Change-Id: I2d953afa3d2766ca2b4529e9e49151c098b466aa
3 files changed
tree: 1da990785fc55363f1a3cf89447f0bb3b74de22e
  1. staticlibs/