add patch list for LLVM 10

[vchuravy]

I have an outdated PR for Yggdrasil as well JuliaPackaging/Yggdrasil#456

[vchuravy]

Fails right now with:

In file included from /data/vchuravy/builds/julia-10/usr/include/llvm/ExecutionEngine/Orc/CompileUtils.h:16:0,                                     
                 from /data/vchuravy/src/julia/src/jitlayers.h:10,                                                                                 
                 from /data/vchuravy/src/julia/src/jitlayers.cpp:27:                                                                               
/data/vchuravy/builds/julia-10/usr/include/llvm/ExecutionEngine/Orc/IRCompileLayer.h: In instantiation of ‘llvm::Error llvm::orc::LegacyIRCompileLayer<BaseLayerT, CompileFtor>::addModule(llvm::orc::VModuleKey, std::unique_ptr<llvm::Module>) [with BaseLayerT = llvm::orc::LegacyRTDyldObjectLink$ngLayer; CompileFtor = JuliaOJIT::CompilerT; llvm::orc::VModuleKey = long unsigned int]’:
/data/vchuravy/src/julia/src/jitlayers.cpp:537:54:   required from here
/data/vchuravy/builds/julia-10/usr/include/llvm/ExecutionEngine/Orc/IRCompileLayer.h:111:18: error: ‘class std::unique_ptr<llvm::MemoryBuffer>’ ha$ no member named ‘takeError’
       return Obj.takeError();
              ~~~~^~~~~~~~~
/data/vchuravy/builds/julia-10/usr/include/llvm/ExecutionEngine/Orc/IRCompileLayer.h:112:14: error: no matching function for call to ‘llvm::orc::L$gacyRTDyldObjectLinkingLayer::addObject(std::remove_reference<long unsigned int&>::type, std::remove_reference<llvm::MemoryBuffer&>::type)’
     if (auto Err = BaseLayer.addObject(std::move(K), std::move(*Obj)))
              ^~~
In file included from /data/vchuravy/src/julia/src/jitlayers.h:14:0,
                 from /data/vchuravy/src/julia/src/jitlayers.cpp:27:
/data/vchuravy/builds/julia-10/usr/include/llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h:391:9: note: candidate: llvm::Error llvm::orc::Lega$yRTDyldObjectLinkingLayer::addObject(llvm::orc::VModuleKey, llvm::orc::LegacyRTDyldObjectLinkingLayerBase::ObjectPtr)
   Error addObject(VModuleKey K, ObjectPtr ObjBuffer) {
         ^~~~~~~~~
/data/vchuravy/builds/julia-10/usr/include/llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h:391:9: note:   no known conversion for argument 2 f$om ‘std::remove_reference<llvm::MemoryBuffer&>::type {aka llvm::MemoryBuffer}’ to ‘llvm::orc::LegacyRTDyldObjectLinkingLayerBase::ObjectPtr {aka s$d::unique_ptr<llvm::MemoryBuffer>}’