SWDEV-283930 - Fix bugs in HIP Tests on Windows

Windows doesn't have headers unistd.h, sys/wait.h, so
remove them for _WIN64. Also, Windows doesn't have rand_r
so define it. Fixes builds for HIP tests:
d2dMemCpyWithPinnedHostMemory, hipMemset3DFunctional,
hipModuleLoadMultProcessOnMultGPU,
hipModuleLoadUnloadStress, hipModuleNegative,
hipStreamACb_ThrdBehaviour, hipMemcpyNegativeMThrdMSize,
hipStreamACb_MStrm_Mgpu, StreamAddCallback,
hipStreamACb_StrmSyncTiming, hipStreamACb_MultiCalls,
hipMallocConcurrency, hipMemset3DRegressMultiThread,
and hipSetGetDevice.

Change-Id: Id2f98d664716026c590d879e464ba467d4c071be

tests/src/test_common.h

@@ -136,8 +136,8 @@ inline int hip_skip_retcode() {
 #define fileno(x) _fileno(x)
 #define dup(x) _dup(x)
 #define dup2(x,y) _dup2(x,y)
-#define close(x) _close(x)
 #define pipe(x,y,z) _pipe(x,y,z)
+#define sleep(x) _sleep(x)
 #else
 #define aligned_free(x) free(x)
 #endif
@@ -169,6 +169,10 @@ extern const char* NULL_DEVICE;
 #define TYPENAME(T) "?"
 #endif
 
+#ifdef _WIN64
+int rand_r(unsigned int* s);
+#endif
+
 // Get Optimal Thread count size
 size_t getHostThreadCount(const size_t memPerThread = 200 /* MB */, const size_t maxThreads = 0);