Set QTHREAD_SHEPHERD_BOUNDARY to socket for chap04 performance testing

[trivial, not reviewed]

Seeing if this has any performance impact. From my previous ad-hoc testing I
don't think it will, but it won't hurt to collect a few days worth of data.


git-svn-id: http://svn.code.sf.net/p/chapel/code/trunk@23680 3a8e244f-b0f2-452b-bcba-4c88e055c3ca
Turning on qthreads performance testing for chap03

[trivial, not reviewed]

Seeing what the performance for qthreads will be on a machine without multiple
sockets (and thus a machine where work stealing shouldn't occur.) They idea has
been ok'd previously, and chap03 was already removed from the all-cf list.


git-svn-id: http://svn.code.sf.net/p/chapel/code/trunk@23681 3a8e244f-b0f2-452b-bcba-4c88e055c3ca