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

tests/src/CMakeLists.txt

@@ -200,6 +200,8 @@ make_hip_executable (hipTestMemcpyPin hipTestMemcpyPin.cpp)
 make_hip_executable (hipDynamicShared hipDynamicShared.cpp)
 make_hip_executable (hipTestDevice hipTestDevice.cpp)
 make_hip_executable (hipTestDeviceDouble hipTestDeviceDouble.cpp)
+
+
 make_test(hip_ballot " " )
 make_test(hip_anyall " " )
 make_test(hip_popc " " )
@@ -245,6 +247,7 @@ make_test(hipTestDevice " ")
 make_named_test (hipMultiThreadDevice "hipMultiThreadDevice-serial" --tests 0x1) 
 make_named_test (hipMultiThreadDevice "hipMultiThreadDevice-pyramid" --tests 0x4) 
 make_named_test (hipMultiThreadDevice "hipMultiThreadDevice-nearzero" --tests 0x10) 
+make_test(hipMemoryAllocate " ")
 
 if (${HIP_MULTI_GPU})
     make_test(hipPeerToPeer_simple " ")                  # use current device for copy, this fails.
@@ -254,7 +257,6 @@ if (${HIP_MULTI_GPU})
 endif()
 
 if (${HIP_PLATFORM} STREQUAL "hcc")
-    make_test(hipMemoryAllocate " ")
     make_test(hipFuncSetDevice " ")
 endif()