[Driver] Support response file in Fuchsia driver

[phosek]

Summary

All officially supported linkers should support response files and
this avoids issues when compiling on platforms such as Windows.

clang/lib/Driver/ToolChains/Fuchsia.cpp

if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs,
 
     if (Args.hasArg(options::OPT_fsplit_stack))
       CmdArgs.push_back("--wrap=pthread_create");
 
     if (!Args.hasArg(options::OPT_nolibc))
       CmdArgs.push_back("-lc");
   }
 
-  C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
+  C.addCommand(std::make_unique<Command>(JA, *this,
+                                         ResponseFileSupport::AtFileCurCP(),
                                          Exec, CmdArgs, Inputs, Output));
 }
 
 void fuchsia::StaticLibTool::ConstructJob(Compilation &C, const JobAction &JA,
                                           const InputInfo &Output,
                                           const InputInfoList &Inputs,
                                           const ArgList &Args,
                                           const char *LinkingOutput) const {