Fix variable names in GitHub actions config

[iamthad]

Commit 5fd1bdd renamed some CMake variables from WHISPER_SUPPORT_* to WHISPER_*, but the GitLab Actions config still has the old names.

As a result, the "OpenBLAS-enabled" Windows builds don't actually enable BLAS support.

[bobqianic]

Nice find! So, this PR reinstates several sanity checks and reveals quite a few problems in the current master branch.

[bobqianic]

Could you also refresh the OpenBLAS download link to ensure it's the latest version?

For reference, please check: OpenBLAS Releases on GitHub.

[iamthad]

I've added a commit that renames the blasdir variable in build.yml to OPENBLAS_PATH, as introduced in #1128. This should fix the "Environment variable OPENBLAS_PATH not defined" error in the build.

[bobqianic]

Do you have any suggestions for a fix? error C2039: 'n_gpu_layers': is not a member of 'llama_context_params' @jhen0409

#1436

whisper.cpp/examples/talk-llama/talk-llama.cpp

Lines 279 to 281 in 0463028

	if (!params.use_gpu) {
	lcparams.n_gpu_layers = 0;
	}

[jhen0409]

Do you have any suggestions for a fix? error C2039: 'n_gpu_layers': is not a member of 'llama_context_params' @jhen0409

#1436

whisper.cpp/examples/talk-llama/talk-llama.cpp

Lines 279 to 281 in 0463028

	if (!params.use_gpu) {
	lcparams.n_gpu_layers = 0;
	}

Ahh I think it may be wrong, n_gpu_layers should be used in lmparams.

UPDATE: #1441