[clang] [llvm] [Libomptarget] Statically link all plugin runtimes (PR #87009)

[Joseph Huber via cfe-commits]

jhuber6 wrote:

> There are duplicate definitions of the following
> 
> ```
> bool llvm::omp::target::ompt::Initialized = false;
> 
> ompt_get_callback_t llvm::omp::target::ompt::lookupCallbackByCode = nullptr;
> ompt_function_lookup_t llvm::omp::target::ompt::lookupCallbackByName = nullptr;
> ```
> 
> in src/OpenMP/OMPT/Callback.cpp and plugins-nextgen/common/OMPT/OmptCallback.cpp
> 
> Can you remove the ones in the plugin? Otherwise, it's not clear which definition is being used.

Sure, do you get that upstream? If so, wonder why I didn't get it.

I guess we would just have it to where the `libomptarget` instance handles all the OMPT.

https://github.com/llvm/llvm-project/pull/87009