added convertToLocaleWithFallback()

Change-Id: I9eb1418721026a0d869b97aa577bc3196f960488

i18nlangtag/source/languagetag/languagetag.cxx

@@ -1640,4 +1640,11 @@ LanguageType LanguageTag::convertToLanguageTypeWithFallback( const OUString& rBc
     return LanguageTag( rBcp47).makeFallback().getLanguageType( true);
 }
 
+
+// static
+com::sun::star::lang::Locale LanguageTag::convertToLocaleWithFallback( const OUString& rBcp47 )
+{
+    return LanguageTag( rBcp47).makeFallback().getLocale( true);
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

include/i18nlangtag/languagetag.hxx

@@ -448,6 +448,19 @@ public:
      */
     static LanguageType convertToLanguageTypeWithFallback( const OUString& rBcp47 );
 
+    /** Convert BCP 47 string to Locale with fallback, convenience method.
+
+        NOTE: exists only for consistency with the other convertTo...()
+        methods, internally uses a temporary LanguageTag instance for
+        conversion so does not save anything compared to
+        LanguageTag(rBcp47).makeFallback().getLocale(bResolveSystem).
+
+        @see    makeFallback()
+
+        Always resolves an empty tag to the system locale.
+     */
+    static com::sun::star::lang::Locale convertToLocaleWithFallback( const OUString& rBcp47 );
+
 private:
 
     enum Decision