ART: Print maps directly to log

Do not read proc maps into a string before printing them later back
to the log. In low-memory situations this can cause a bad_alloc.

External bug: http://b.android.com/153990
Bug: 19494774

Change-Id: Ie63d8788afe8c9da65b30b2f89c50d3dbb820755
4 files changed