Refactored generic tests with timer host test supervision ...

Reactored RTOS tests

Cleaned pyFlakes issues with unused imports

Host test refactoring: cleaned a bit functionality of host tests. Forced test() function in DefaultTest to be method returning test result

Host test refactoring ...

Host test refactoring: replaced magic values of test results returned by host test

Prints with stdout.flush() replaced with notify function

Host test refactoring: created separate enum like class for test result strings

Modified host tests to use serial.realine() function to avoid extra timeouts during tests (test will work faster and will be more reliable)

Modified host tests to use serial.realine() function to avoid extra timeouts during tests (test will work faster and will be more reliable)

Improvements to RTC's host_test test case

Added 'real-time' test result printing when tests are executed (view test execution progress using option -V)

Removed from Hello World target test success notification

Simplified HelloWorld test to detect different types of ragteId (they can have different length)

Test bugfix: bugfixed RTOS (mutex, semaphore) - not thread safe stdio causes test result prints to be interrupted by threads' printing ...

test bugfix: added support for targetID print from device for 'hello world' and 'stdio' testcases

Added serial port wrappers for read/write instead of raw serial port access to access MUT serial port. This will allow to catch more issues with communication with MUT during tests. This will also 'hide' tracebacks from test suite execution.

pyFlakes issues fixed. Simple refactoring

MBED_10 Hello World test host automation script added to test suite