Added BufferQueue, refactored top level directory

Makefile

Readme.txt

main.cpp

miosix/doc/textdoc/Changelog.txt

miosix/examples/thread_native/Readme.txt

miosix/examples/thread_native/native_thread_example.cpp

miosix/examples/thread_pthread/Readme.txt

miosix/examples/thread_pthread/pthread_example.cpp

miosix/kernel/buffer_queue.h

miosix/kernel/sync.h

miosix/testsuite/Readme.txt

miosix/testsuite/testsuite.cpp