Build, rather than download, dependencies

[rgov]

The llm submodule, and probably others, download binaries from SourceForge:

BigDL/python/llm/setup.py

Lines 160 to 161 in 610c479

	def obtain_lib_urls():
	base_url = "https://sourceforge.net/projects/analytics-zoo/files/bigdl-llm/"

It is not clear how these dependencies are built, and it would be good for users to be able to recompile them, e.g., for different platforms, for debugging, to apply custom build options or patches, for security review, etc.

[brmarkus]

You might want to move this issue to the new repo, see top of README file:

Important

bigdl-llm has now become ipex-llm, and our future development will move to the IPEX-LLM project.

[rgov]

Sure. Thanks.