Deprecated API Prefix and Suffix Defines

I'm a little confused by the prefix and suffix pre-processor defines for deprecated OpenCL APIs. I believe this is a summary of what is in the headers currently:

| API | Introduced In | Deprecated In | Prefix Define | Suffix Define |
|-------------------------------|-------------------|---------------|---------------------------------------|---------------------------------------|
| clSetCommandQueueProperty | OpenCL 1.0 | OpenCL 1.1 | (None!) | CL_EXT_SUFFIX__ VERSION_1_0_DEPRECATED |
| clCreateImage2D | OpenCL 1.0 | OpenCL 1.2 | CL_EXT_PREFIX__ VERSION_1_1_DEPRECATED | CL_EXT_SUFFIX__ VERSION_1_1_DEPRECATED |
| clCreateImage3D | OpenCL 1.0 | OpenCL 1.2 | CL_EXT_PREFIX__ VERSION_1_1_DEPRECATED | CL_EXT_SUFFIX__ VERSION_1_1_DEPRECATED |
| clEnqueueMarker | OpenCL 1.0 | OpenCL 1.2 | CL_EXT_PREFIX__ VERSION_1_1_DEPRECATED | CL_EXT_SUFFIX__ VERSION_1_1_DEPRECATED |
| clEnqueueWaitForEvents | OpenCL 1.0 | OpenCL 1.2 | CL_EXT_PREFIX__ VERSION_1_1_DEPRECATED | CL_EXT_SUFFIX__ VERSION_1_1_DEPRECATED |
| clEnqueueBarrier | OpenCL 1.0 | OpenCL 1.2 | CL_EXT_PREFIX__ VERSION_1_1_DEPRECATED | CL_EXT_SUFFIX__ VERSION_1_1_DEPRECATED |
| clUnloadCompiler | OpenCL 1.0 | OpenCL 1.2 | CL_EXT_PREFIX__ VERSION_1_1_DEPRECATED | CL_EXT_SUFFIX__ VERSION_1_1_DEPRECATED |
| clGetExtensionFunctionAddress | OpenCL 1.0 | OpenCL 1.2 | CL_EXT_PREFIX__ VERSION_1_1_DEPRECATED | CL_EXT_SUFFIX__ VERSION_1_1_DEPRECATED |
| clCreateCommandQueue | OpenCL 1.0 | OpenCL 2.0 | CL_EXT_PREFIX__ VERSION_1_2_DEPRECATED | CL_EXT_SUFFIX__ VERSION_1_2_DEPRECATED |
| clCreateSampler | OpenCL 1.0 | OpenCL 2.0 | CL_EXT_PREFIX__ VERSION_1_2_DEPRECATED | CL_EXT_SUFFIX__ VERSION_1_2_DEPRECATED |
| clEnqueueTask | OpenCL 1.0 | OpenCL 2.0 | CL_EXT_PREFIX__ VERSION_1_2_DEPRECATED | CL_EXT_SUFFIX__ VERSION_1_2_DEPRECATED |
| clCreateFromGLTexture2D | cl_khr_gl_sharing | OpenCL 1.2? | CL_EXT_PREFIX__ VERSION_1_1_DEPRECATED | CL_EXT_SUFFIX__ VERSION_1_1_DEPRECATED |
| clCreateFromGLTexture3D | cl_khr_gl_sharing | OpenCL 1.2? | CL_EXT_PREFIX__ VERSION_1_1_DEPRECATED | CL_EXT_SUFFIX__ VERSION_1_1_DEPRECATED |
| clGetKernelSubGroupInfoKHR | cl_khr_subgroups | OpenCL 2.1? | (None!) | CL_EXT_SUFFIX__ VERSION_2_0_DEPRECATED |

Should the define indicate:

* When the API was **added**?
* When the API was **last supported**?
* When the API was **deprecated**?
* Or something else entirely?

Right now it looks like we have a bit of a mix, though it looks like we have more usage of "last supported" than anything else.

I'm looking at this to ensure that if we deprecate `clSetProgramReleaseCallback` we do it consistently. Thanks!

Review the deprecated OpenCL API prefix and suffix defines in the headers, using the listed APIs and clSetProgramReleaseCallback as the comparison points. Determine which version meaning the defines should consistently express, then verify that the affected declarations follow that convention and document the resulting rule.

Written by the indexing model from the issue text.