Modify iptables to talk to xt_IDLETIMER version 1.

Change-Id: Ib144c5289681cdff21b21be74173164d097710e7
ignore SIGPIPES

During bugreports mostly, when adb goes away it leads to apps crashing
because their output stream got closed.
Let's just ignore it.

Bug: 6447319
Change-Id: I1b293ebef737014162edebd5fd9bf254345b2ce8
android: Import latest libxt_quota2 code from AOSP 4.2.2

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>