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

include/hip_runtime_api.h

@@ -139,12 +139,12 @@ typedef struct hipPointerAttribute_t {
  * @ingroup Enumerations
  */
 // Developer note - when updating these, update the hipErrorName and hipErrorString functions in NVCC and HCC paths
+// Also update the hipCUDAErrorTohipError function in NVCC path.
+
 typedef enum hipError_t {
      hipSuccess = 0                   ///< Successful completion.
     ,hipErrorMemoryAllocation         ///< Memory allocation error.
-    ,hipErrorMemoryFree               ///< Memory free error.
-    ,hipErrorUnknownSymbol            ///< Unknown symbol.
-    ,hipErrorOutOfResources           ///< Out of resources error.
+    ,hipErrorLaunchOutOfResources     ///< Out of resources error.
     ,hipErrorInvalidValue             ///< One or more of the parameters passed to the API call is NULL or not in an acceptable range.
     ,hipErrorInvalidResourceHandle    ///< Resource handle (hipEvent_t or hipStream_t) invalid.
     ,hipErrorInvalidDevice            ///< DeviceID must be in range 0...#compute-devices.