Patch: initialize ProcessManager early

[Tom Tromey]

>>>>> "Andrew" == Andrew Haley <aph@redhat.com> writes:

Andrew> You have to wonder whether Java's Process / Streams interface is
Andrew> really a sensible way to spawn a process that does name lookup for
Andrew> stack traces .  An earlier version of this name lookup code was
Andrew> written in C++ and didn't use Process at all.

I don't remember why this change was made.  Windows support maybe?
Also I thought we had to do all process reaping in a single thread?

Tom