consolidate thread local storage (#915)

* all thread local access now through single struct

* clean up old commented-out code, more use of GET_TLS()

* fewer calls to GET_TLS by passing tls as a funtion argument

* revert unnecessary change to printf

* fix failing tests due to TLS change

* fix merge conflicts in ihipOccupancyMaxActiveBlocksPerMultiprocessor


[ROCm/hip commit: 1eb3dbf065]

projects/hip/src/hip_device.cpp

@@ -136,14 +136,14 @@ hipError_t hipSetDevice(int deviceId) {
         return ihipLogStatus(hipErrorInvalidDevice);
     } else {
         ihipSetTlsDefaultCtx(ihipGetPrimaryCtx(deviceId));
-        tls_getPrimaryCtx = true;
+        tls->getPrimaryCtx = true;
         return ihipLogStatus(hipSuccess);
     }
 }
 
 hipError_t hipDeviceSynchronize(void) {
     HIP_INIT_SPECIAL_API(hipDeviceSynchronize, TRACE_SYNC);
-    return ihipLogStatus(ihipSynchronize());
+    return ihipLogStatus(ihipSynchronize(tls));
 }
 
 hipError_t hipDeviceReset(void) {
@@ -171,7 +171,7 @@ hipError_t hipDeviceReset(void) {
 }
 
 
-hipError_t ihipDeviceSetState(void) {
+hipError_t ihipDeviceSetState(TlsData *tls) {
     hipError_t e = hipErrorInvalidContext;
     auto* ctx = ihipGetTlsDefaultCtx();