Requirements for creating programs without a compiler available

[bashbaug]

From an OpenCL CTS issue comment, specifically KhronosGroup/OpenCL-CTS#2642 (comment):

The current error behavior for CL_DEVICE_COMPILER_AVAILABLE is a bit different than I'd expect:

• There is no error behavior tied to this query for clCreateProgramWithSource or clCreateProgramWithIL.
• There is error behavior tied to this query for clBuildProgram, clCompileProgram, and clSetProgramSpecializationConstant (???), and these APIs can return CL_COMPILER_NOT_AVAILABLE.

Should it be valid to create a program from source or IL when a compiler is unavailable for all of the devices in the context? According to the letter of the spec, this is not an error, though this also does not seem particularly useful.