Except for dEQP-VK and dEQP-EGL, the initial probing tests to run for
renderer/version/extension checks is currently inferred from the first
line of the caselist. But the inference may be inaccurate.

For example, the caselist "gl46-khr-single.txt" needs to run the probing
test named "KHR-GL46.info.renderer" but since the first line in the
caselist is "KHR-Single-GL46.arrays_of_arrays_gl.SizedDeclarationsPrimitive"
the renderer check attempts to run the non-existent test
"KHR-Single-GL46.info.renderer"

Improve the test name guessing by adding some pattern matching
that will exclude any extraneous words like “single”. It is not entirely
fool-proof e.g. lines like "KHR-NoContext.es2.no_error.create_context" and
"GTF-GL45.gtf21.GL.abs.abs_float_frag_xvary" will still confuse it,
but it does expand the scope of the caselists that can be checked.

See Issue #45