NVCC improvements.

- Complete translation tables for cudaError <-> hipError_t.
- Remove some odd errors that were not correctly translated or not used.
- Add HIPCHECK_API to test infrastructure.  Used for negative testing
  an API ; if a mismatch occurs it shows the expected return error
  code.  Can also print a warning rather than error.
- Enable hipMemoryAllocate on NV system, and review error coded.
- Add hipErrorName to nvcc.

Change-Id: I680427dcf32a5796d5913cf9e7f3b4c6f6b91599

Conflicts:
	tests/src/CMakeLists.txt

Bug fixes and improved docs for hipFree and hipHostFree.

    - Passing NULL pointer initialized runtime and return hipSuccess
      (not an error like before).
    - add negative test for this. (hipMemoryAllocate, improved)
    - Match NVCC errors for invalid pointers, add to test.
    - Update hipFree and hipHostFree docs.
    - hipGetDevicePointer always set *devicePointer=NULL, even for
      invalid flags.
    - Gate shared memory usage on specific HCC work-week.

Change-Id: I533b4fd3280a3d6cdbf05eb768976f0c7506c012

src/hip_hcc.cpp

@@ -100,7 +100,7 @@ hsa_agent_t g_cpu_agent;
 ihipSignal_t::ihipSignal_t() :  _sig_id(0)
 {
     if (hsa_signal_create(0/*value*/, 0, NULL, &_hsa_signal) != HSA_STATUS_SUCCESS) {
-        throw ihipException(hipErrorOutOfResources);
+        throw ihipException(hipErrorRuntimeMemory);
     }
     //tprintf (DB_SIGNAL, "  allocated hsa_signal=%lu\n", (_hsa_signal.handle));
 }
@@ -110,7 +110,7 @@ ihipSignal_t::~ihipSignal_t()
 {
     tprintf (DB_SIGNAL, "  destroy hsa_signal #%lu (#%lu)\n", (_hsa_signal.handle), _sig_id);
     if (hsa_signal_destroy(_hsa_signal) != HSA_STATUS_SUCCESS) {
-       throw ihipException(hipErrorOutOfResources);
+       throw ihipException(hipErrorRuntimeOther);
     }
 };
 
@@ -1137,9 +1137,7 @@ const char *ihipErrorString(hipError_t hip_error)
     switch (hip_error) {
         case hipSuccess                         : return "hipSuccess";
         case hipErrorMemoryAllocation           : return "hipErrorMemoryAllocation";
-        case hipErrorMemoryFree                 : return "hipErrorMemoryFree";
-        case hipErrorUnknownSymbol              : return "hipErrorUnknownSymbol";
-        case hipErrorOutOfResources             : return "hipErrorOutOfResources";
+        case hipErrorLaunchOutOfResources       : return "hipErrorLaunchOutOfResources";
         case hipErrorInvalidValue               : return "hipErrorInvalidValue";
         case hipErrorInvalidResourceHandle      : return "hipErrorInvalidResourceHandle";
         case hipErrorInvalidDevice              : return "hipErrorInvalidDevice";