Changes persistence level to 'enterprise' on Windows

src/keytar_win.cc

@@ -133,7 +133,7 @@ KEYTAR_OP_RESULT SetPassword(const std::string& service,
   cred.UserName = user_name;
   cred.CredentialBlobSize = password.size();
   cred.CredentialBlob = (LPBYTE)(password.data());
-  cred.Persist = CRED_PERSIST_LOCAL_MACHINE;
+  cred.Persist = CRED_PERSIST_ENTERPRISE;
 
   bool result = ::CredWrite(&cred, 0);
   delete[] target_name;