Augment SyzyASAN crash reports with stack traces on alloc/free.

BUG=

Review URL: https://codereview.appspot.com/6817056

git-svn-id: http://sawbuck.googlecode.com/svn/trunk/syzygy@1211 15e8cca8-e42c-11de-a347-f34a4f72eb7d
3 files changed