API Feature Consistency Test, Part 1 (#875)

* add api consistency test for Shared Virtual Memory

* add memory model and device enqueue consistency tests

* added pipes test
clang-format fixes

* simplify diffs

* add negative tests for when features are not supported

Previously, this test emitted warnings in the log if a feature
wasn't supported and a query or API call didn't generated the
expected value.  After this change, these tests will fail if
a query or API call does not generate the expected value or
error condition.

* switch handling of expected error codes to test_failure_error

* fix formatting

* use valid pipe creation parameters

* remove calls to clFinish as per review comments

* purposefully pass a bogus pointer to SVM free functions

* fix pointer passed to clEnqueueSVMFree

* change the bogus pointer to a known bit pattern

test_conformance/api/CMakeLists.txt

@@ -2,6 +2,7 @@ set(MODULE_NAME API)
 
 set(${MODULE_NAME}_SOURCES
          main.cpp
+         test_api_consistency.cpp
          test_bool.cpp
          test_retain.cpp
          test_retain_program.cpp