[llvm] [lld] [llvm-readobj][Object][COFF] Print COFF import library symbol export name. (PR #78769)

[Jacek Caban via llvm-commits]

cjacek wrote:

Could I please get it reviewed?

To rephrase my above comment about `IMPORT_NAME_NOPREFIX`: tools creating import libraries should never need to use it on non-i386 targets, but in a hypothetical situation when such import library is used, we may as well respect it like LLD does. I will change it if preferred.

https://github.com/llvm/llvm-project/pull/78769