Describe the bug
The coverage test cases for OS_VxWorks_Sigwait are failing:

[BEGIN] 03 OS_VxWorks_SigWait
[ FAIL] 03.001 coveragetest-ostimer.c:160 - Osapi_Internal_CallSigWaitFunc(0) (0) == 8888 (8888)
[ FAIL] 03.002 coveragetest-ostimer.c:162 - Osapi_Internal_CallSigWaitFunc(0) (0) == 5555 (5555)
[ FAIL] 03.003 coveragetest-ostimer.c:164 - Osapi_Internal_CallSigWaitFunc(0) (0) == 5555 (5555)
[  END] 03 OS_VxWorks_SigWait   TOTAL::3     PASS::0     FAIL::3      MIR::0      TSF::0      N/A::0   

To Reproduce
Build OSAL coverage tests and execute

Expected behavior
All tests should pass

System observed on:
Ubuntu 18.04 LTS 64-bit

Additional context
This was probably some fallout related to the VxWorks timer fixups that were done recently (#271, #274) but never noticed because the OSAL coverage test is still separate (that aspect is also being addressed).

Reporter Info
Joseph Hickey, Vantage Systems, Inc.