marginally better thread debugging on Linux.
marginally better thread debugging on Linux.

if you clone inside a traced pid, the child
is automatically attached and stopped,
apparently.

R=r
DELTA=63  (41 added, 12 deleted, 10 changed)
OCL=24096
CL=24106

tav/go,tav/go,tav/go,tav/go,tav/go,tav/go,tav/go