Driver: Quote the command in crash reproduction scripts.

This fixes crash report generation when filenames have spaces. It also
removes an awkward workaround that quoted *some* arguments when
generating crash reports.

llvm-svn: 220307
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index baf154f..ccefbd8 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -547,7 +547,7 @@
     Diag(clang::diag::note_drv_command_failed_diag_msg)
         << "Error generating run script: " + Script + " " + EC.message();
   } else {
-    Cmd.Print(ScriptOS, "\n", /*Quote=*/false, &CrashInfo);
+    Cmd.Print(ScriptOS, "\n", /*Quote=*/true, &CrashInfo);
     Diag(clang::diag::note_drv_command_failed_diag_msg) << Script;
   }
   Diag(clang::diag::note_drv_command_failed_diag_msg)