Prefer /proc/<pid>/task/<pid>/maps over /proc/<pid>/maps on Linux.

This resolves #227.

Bug: 21326736
(cherry picked from commit 7fe3a2a2e0cfcc5e7c9c3e7b1243dde38270540e)

Change-Id: Id3597873e5e5a730e0f7edc0fc44511bd5b1dabd
1 file changed