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
4 files changed