Use uppercase country codes in catalog names.

nielx+pulkomandy: With the switch from Pootle we switched to the correct
representation of country codes by using lang_COUNTRY (instead of lang_country).
Haiku did not respect that yet and instead always looked for lower case country
codes, thus not finding all the hard work of the pt_BR team.

Other translations currently affected are en_CA and en_GB, though these are not
actively maintained.

+alpha4

src/kits/locale/CatalogData.cpp

@@ -16,8 +16,6 @@ BCatalogData::BCatalogData(const char* signature, const char* language,
 	fFingerprint(fingerprint),
 	fNext(NULL)
 {
-	fLanguageName.ToLower();
-		// canonicalize language-name to lowercase
 }