removeAllProcessGroups and removeUidProcessGroups were calling
opendir, but never called closedir. This would leave a leaked
file descriptor for every /acct/uid_* directory that existed
at boot.
Change-Id: Ia08eccd42d6ad7a6c1c78402519ac2e53b4fc83a
libprocessgroup will allow Zygote to place processes
in a cgroup, and then kill the process and all forked processes
later. lmkd will also kill all forked processes.
Bug: 15313911
Change-Id: I20404d0dbe448f1c475d2f4c61cccca462f9e544