Backed out changeset [369996c08420]. The argument and order dependent numbering of static ctors/dtors generally doesn't matter because other modules shouldn't reference their symbols. The next changeset will fix a LDC bug that caused such references within ModuleInfo.

// D runtime support helpers

bool LLVM_D_InitRuntime();
void LLVM_D_FreeRuntime();

llvm::Function* LLVM_D_GetRuntimeFunction(llvm::Module* target, const char* name);

llvm::GlobalVariable* LLVM_D_GetRuntimeGlobal(llvm::Module* target, const char* name);