Revert "Switch adb to epoll(2)."

This reverts commit 67de1557b0aa53b07a96d24734f165238f7415b3.
Merge "Revert "Switch adb to epoll(2).""
LibNativeBridge: Fix two bugs

Instruction set comparison must include the termination character
so that prefixes are not identified as equal.

Mount argument order was wrong.

Change-Id: Ib70e36ce2ea5af158ebc9d7fafd00e978348d73d
Merge "LibNativeBridge: Fix two bugs"