[ELF][x86-64] Separate static and dynamic GOT/PLT generation.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@176294 91177308-0d34-0410-b5e6-96231b3b80d8
[ELF][Hexagon] add quickdata relocations

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@176298 91177308-0d34-0410-b5e6-96231b3b80d8