Add some comments about thread dumping and suspension.
Add some comments about thread dumping and suspension.

Change-Id: I7903a363f8ab37a6af936dd963e6a321d61c3084

treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst