[build] correct sed usage
Merge pull request #58 from Chilledheart/fix_sed_usage

[build] correct sed usage
[build] add cmake build system

 - add missing includedir for cmake
 - remove shared library version
 - python support
Resolve pidfile resource leaks

This patch resolves resource leaks caused by not closing the file streams upon
an write error.
[lib] removal of unused code
[build] fix bus error while execute make -jN (N>1)
[build] fix the missing inclusion of config.h
[lib] add support for BSDs