Mark3 RTOS Source

Adjusting the timer sanity test, necessitated by removing the timer fudge factor.

Getting rid of the timer fudge-factor, adding timer unit tests.

Extending the "test" unit test to become the ut_logic unit test, to test the logic used within the unit test macros/classes themselves.

Adding fundamentals for extended unit testing framework, with macros similar to gtest, but much more lightweight.

Fixed read handling - updated fizzybox cat routine appropriately.

Updating NLFS File read routine. Stilly buggy...

Added proper handling of file-mode in nlfs_file (read/write/append/truncate/create)
Updated fizzybox test with usage of the ShellSupport and proper file handling
Fixed a bug in nlfs where the file node is not returned on file creation

Adding some extra details to the fizzybox shell example

Adding fizzybox shell demo app for realz.

Checking in the beginning of a shell, as well as some additional memutil functionality.