commit b3b0726fdca7ad311788b1d3ece259908b2ccf6f
author Michał Górny <mgorny@moritz.systems> Tue Apr 13 12:21:24 2021 +0200
committer Copybara-Service <copybara-worker@google.com> Tue Apr 13 17:02:48 2021 -0700
tree 9e2ba518b5d14aeaa8db3d69991e5f4298384200
parent fb2497136b7a44e2e973368c03fae0d41a355c9b

Reland "[lldb] [Process] Watch for fork/vfork notifications" for FreeBSD

The original commit was reverted because of the problems it introduced
on Linux.  However, FreeBSD should not be affected, so restore that part
and we will address Linux separately.

While at it, remove the dbreg hack as the underlying issue has been
fixed in the FreeBSD kernel and the problem is unlikely to happen
in real life use anyway.

Differential Revision: https://reviews.llvm.org/D98822

GitOrigin-RevId: 63d75641054afb0fe43928e9430a2bb92f09e121