OS_IntGetMask OS_IntSetMask missing functional tests

[skliper]

Is your feature request related to a problem? Please describe.
Missing functional tests for OS_IntGetMask and OS_IntSetMask

Describe the solution you'd like
Add tests

Describe alternatives you've considered
None

Additional context
Certification issue

Requester Info
Jacob Hageman - NASA/GSFC

[jphickey]

Not so sure how these can be tested in a functional test as the definition of an interrupt mask is CPU/BSP-specific. While OSAL might have a wrapper around the syscall it doesn't really abstract the semantics of it. Furthermore, the side effects are likely quite different on a multi-core CPU.

Recommend to deprecate the functions, like the FPU variants. I don't see either of these calls being used by any current CFE/PSP code. POSIX and RTEMS both return OS_ERR_NOT_IMPLEMENTED for these anyway.

[skliper]

@acudmore opinion? I'm all for deprecation.

[skliper]

#71 also related (and highlights issue of platform dependence).

[skliper]

#396 makes this no longer applicable