Implemented new build system with CMake

.gitignore

CMakeLists.txt

miosix/CMakeLists.txt

miosix/_examples/blinking_led/CMakeLists.txt

miosix/_examples/blinking_led/simple.cpp

miosix/_examples/processes/CMakeLists.txt

miosix/_examples/processes/main.cpp

miosix/_examples/processes/process1.cpp

miosix/_examples/processes/process2.cpp

miosix/_tools/build_test.sh

miosix/_tools/processes/CMakeLists.txt

miosix/_tools/testsuite/CMakeLists.txt

miosix/arch/CMakeLists.txt

miosix/arch/cortexM4_stm32f4/CMakeLists.txt

...texM4_stm32f4/stm32f407vg_stm32f4discovery/CMakeLists.txt

...texM4_stm32f4/stm32f429zi_stm32f4discovery/CMakeLists.txt

...m32f429zi_stm32f4discovery/stm32_2m+256k_rom_processes.ld

miosix/arch/cortexM7_stm32f7/CMakeLists.txt

...x/arch/cortexM7_stm32f7/stm32f767zi_nucleo/CMakeLists.txt

...stm32f7/stm32f767zi_nucleo/stm32_2m+384k_ram_processes.ld