Log Message:
Update to 3.4.2

* Upstream supports NetBSD and remove local patches

Changelog:
3.4.2 - 2016-01-20
==================

**Enhancements**

- #728: [Solaris] exposed psutil.PROCFS_PATH constant to change the default
  location of /proc filesystem.

**Bug fixes**

- #730: [FreeBSD] psutil.virtual_memory() crashes.

3.4.1 - 2016-01-15
==================

**Enhancements**

- #557: [NetBSD] added NetBSD support.  (contributed by Ryo Onodera and
  Thomas Klausner)
- #708: [Linux] psutil.net_connections() and Process.connections() on Python 2
  can be up to 3x faster in case of many connections.
  Also psutil.Process.memory_maps() is slightly faster.
- #718: process_iter() is now thread safe.

**Bug fixes**

- #714: [OpenBSD] virtual_memory().cached value was always set to 0.
- #715: don't crash at import time if cpu_times() fail for some reason.
- #717: [Linux] Process.open_files fails if deleted files still visible.
- #722: [Linux] swap_memory() no longer crashes if sin/sout can't be determined
  due to missing /proc/vmstat.
- #724: [FreeBSD] virtual_memory().total is slightly incorrect.