tree bdf74befb18407a3cb5ec4bd406059314b0434a7
parent 5d96a7168dd3e2a4acf1a947ef12efa8f82b95c0
author Elliott Hughes <enh@google.com> 1340924902 -0700
committer Elliott Hughes <enh@google.com> 1340934835 -0700

Fix posting exceptions when a debugger is attached, fix UpdateDebugger, fully implement ThreadGroupReference.Children.

Posting exceptions and UpdateDebugger were broken by the recent stack-walking
rewrite.

dalvikvm never did ThreadGroupReference.Children correctly; it only admitted
that "system" is the parent of "main".

Change-Id: I386f2fa5e01fba56cb2a1af4f136dbf31da0ff07