vm174 .xcu update

One project uses "." as prefix, but LO uses ".."

Change-Id: I18eaf66c54176b0c3268d9fb94a002e4b68722fe

l10ntools/source/gConvXcu.cxx

@@ -125,6 +125,7 @@ void convert_xcu::stopCollectData(char *syyText)
 
     if (useText.size()) {
         // locate key and extract it
+        useKey = ".";
         for (nL = 0; nL < (int)mcStack.size() -1; ++nL)
             useKey += "." + mcStack[nL];
         mcMemory.setSourceKey(miLineNo, msSourceFile, useKey, useText, "", "value", mcStack[nL], mbMergeMode);