Make llvm-go test dependency optional.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220503 91177308-0d34-0410-b5e6-96231b3b80d8
Change the name of the field BindTable to bindtable to not over lap the type.

Should fix the build bot issues from commit r220500.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220504 91177308-0d34-0410-b5e6-96231b3b80d8