Pass in SILOptions to SILModule.

This should have been done a long time ago since SILOptions are options that
should be able to effect everything SIL related. In this case I just want to
pass in a flag on the SILModule to enable +0 self. By putting it on the
SILModule I can conveniently check it in SILFunctionType without exposing any
internal state from SILFunctionType.cpp.

Swift SVN r23647

tools/sil-opt/SILOpt.cpp

@@ -576,7 +576,8 @@ int main(int argc, char **argv) {
   if (IsModule) {
     assert(!CI.hasSILModule() &&
            "performSema() should not create a SILModule.");
-    CI.setSILModule(SILModule::createEmptyModule(CI.getMainModule()));
+    CI.setSILModule(SILModule::createEmptyModule(CI.getMainModule(),
+                                                 CI.getSILOptions()));
     std::unique_ptr<SerializedSILLoader> SL = SerializedSILLoader::create(
         CI.getASTContext(), CI.getSILModule(), nullptr);
     SL->getAll();