Revert "Do not use opendir after CLONE_VM or vfork."

This reverts commit 8a4f9b88dc66b923e7990e5be07f528380fd5bb1.

Reason for revert: Broke tests.

Change-Id: Ib0849a1da3e8c9491f79a201e21598243b6c5ad6
1 file changed