[Piglit] tests for clRelease* with NULL parameter or calling after recource has been allready released (ref count = 0)

[Ville Korhonen]

Hi,

Piglit OpenCL API tests regarding clRelease* functions include  
releaase calls with NULL parameter and call with parameter which has  
already been released and deleted (reference counter = 0).

In OpenCL 1.2 specs it says: "After the context reference count  
becomes zero and all the objects attached to context (such as memory  
objects, command-queues) are released, the context is deleted." (for  
clReleaseContext)

Furthermore, when using ICD with the dispatch table expected to be  
stored in the object, calling any function with a NULL argument or a  
deleted object seems calling for trouble.

Should I commit a fix to these tests (basically remove them) or have I  
misunderstood something?

--Ville