replace autotool with cmake/premake

Hi @fsaintjacques,

My changes is about building disruptor.  I found using [premake](http://industriousone.com/premake)/[cmake](http://www.cmake.org/) to generate Makefile can effectively avoid the generated binaries / object files from polluting the source folder.  Its configuration is flexible and the usage is also easy.

$ premake4 gmake - _This effectively generates the Makefile_
$ make -C build - _Build the binaries from Makefile_