* Improved pidfile handling code contributed by Jay Berkenbilt.
Changes 3.9.1:
* Fix assertion failure on 64-bit architectures using LZO 2.0+.
* Clean up harmless compiler warnings in ClientMultiplexer and
ServerMultiplexer.
Changes 3.9.0:
* Re-implemented EncodeBuffer/DecodeBuffer to use considerably less CPU and
very slightly improve compression.
* Builds with LZO 2.0 release.
* Compiles under the Mingw environment to create native Win32 binaries.
* Added dxpcssh sample script courtesy of Wicher Minnaard.
* Added dxpc.spec file contributed by Daniel Mealha Cabrita.
* Fixed some small memory leaks and potential buffer overruns.
* Indented all sources.
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