Rather than utilizing a separate "stub-map-to-real.h" file that would
need to be injected into the build of the unit under test, this builds
the mappings into the mapping into the override files themselves.

The stub functions are then moved into a separate header under a
unique name with an OCS_ prefix.

This introduces a number of new files, as what previously required
a single header now requires two, but it it eliminates the separate
map file.

Add a union wrapper for the abstract data field such that it will
be aligned for 32 bit integer values and/or pointers, whichever is
greater.

This should be sufficient for casting to the system "struct sockaddr"

Fix warnings that are triggered by compiling the OSAL coverage
unit test with strict settings.

- The OS_FPUExcAttachHandler function needs to be prototyped
  as accepting a function pointer (not void*)
- Const-Correctness on OS_ModuleLoad_Impl()
- Use void* instead of char* for buffer pointer as the specific
  type is not known
- Cast the function passed into taskSpawn on VxWorks

Additional compiler warning fixes for the UT code itself.
This is committed separately from the changes that affect
the OSAL FSW code.

- Ensure the FPU functions that are actually not implemented in
  RTEMS/POSIX all return OS_ERR_NOT_IMPLEMENTED, not OS_SUCCESS.
- The RTEMS IntEnable/Disable API should not be a duplicate of
  the IntLock/Unlock API, as the semantics are slightly different.
  The Enable/Disable API should return OS_ERR_NOT_IMPLEMENTED.
- The OS_FPUExcGetMask API should confirm that the output buffer
  is not NULL.

Modify the "unit-tests" (extended/functional tests) for OSAL to use
the UT assert library for test case reporting and platform support.

Reduce or eliminate the use of macros for platform abstraction
wherever possible.  This removes most platform-specific logic from
the test cases, leaving that to the OSAL/BSP abstraction.

This is related to the change for #271, where the return value
of this function depends on the configured timer interval.  The
coverage test case for this was not updated in the original change.

1. Add a hard limit to the execution (work) counter for the
sem-speed-test worker threads.  With this they will self-exit
eventually even if the root task never gets CPU time to stop them.

2. Set the priority of the worker tasks to be logically lower, so
it is less likely to preempt the main task.

Note that the logical priority is inverted from the numeric value.

Fix #295, #298, #305, #307, #308,
    #313, #314, #316, #321, #323
Reviewed and approved at 2019-12-18 CCB

Adds a NOSA copyright header to all files touched
as part of the fix for #297.

Fix #297
Reviewed and approved at 2019-12-18 CCB