[clang] [flang] [flang][Driver] Support -nodefaultlibs, -nostartfiles and -nostdlib (PR #72601)

[Andrzej Warzyński via cfe-commits]

https://github.com/banach-space commented:

This makes sense to me, though I'm not a linker expert. 

It would be helpful if you could clearly distinguish between the two opposite cases that are currently being tested in "dynamic-linker.f90".

https://github.com/llvm/llvm-project/pull/72601