Created "task.h" for the task interface (TCBs).  Each task now defines
their own TCBs.  Comment updates.  OLEDDisplayTask is now just
DisplayTask.  Probably will need to include header guards on task.h, and
should probably add them to all the include files.
Added include guards
Fixed incorrect function name and added prototype to make compiler smile
Directory structure
Initial serial task commit.  Untested, but it will work the first time.
Merge branch 'master' of github.com:ellingjp/ee472

Conflicts:
	lab3/code/compute.c
	lab3/code/compute.h
	lab3/code/globals.h
	lab3/code/measure.c
	lab3/code/measure.h
	lab3/code/schedule.c
	lab3/code/status.c
	lab3/code/status.h
	lab3/code/warning.c
	lab3/code/warning.h
Fixed bad merge conflicts