Matches rest of RTOS class timeout parameters by using the unit name. Remove ambigious statement in reference to 0 ms being no-timeout as a timeout of 0 causes the function to not block and return immediately (osWaitForever is used as no timeout as it will wait forever)
Various RTOS classes were storing their CMSIS-RTOS creation attribute
structure as a member, when it's not required after construction. Reduce
memory by eliminating this member.