[libposix-development] Initial attempt at CMake

[Henrique A. <hd...@gm...>]

 I've updated a initial version of a CMakeLists.txt for the project
and it can be compiled with cmake. Instructions follow:

 - install cmake ("sudo apt-get install cmake" in Ubuntu)
 - from "libposix" directory, cd .. && mkdir libposix.build && cd libposix.build
 - cmake ../libposix
 - make

 Please test. It should work on all targets. Immediate TODO list follows:

 - add a target for runtime (runtime.o)
 - remove hardcoded path (RPATH) for libposix in "hello"
 - improve system/architecture detection to map to "platform sets"
(I'll describe those later)

-- 
 Henrique Dante de Almeida
 hd...@gm...