Resolves: tdf#123948 add English (Zambia) [en-ZM] to language list

Change-Id: I6632cacb7e713d4c7aaaedd50267b9e6029b0389
Reviewed-on: https://gerrit.libreoffice.org/71768Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Jenkins

i18nlangtag/source/isolang/isolang.cxx

@@ -677,6 +677,7 @@ static IsoLanguageCountryEntry const aImplIsoLangEntries[] =
     { LANGUAGE_USER_JUHOAN,                "ktz", "NA", k0    },
     { LANGUAGE_USER_NARO,                  "nhr", "BW", k0    },
     { LANGUAGE_USER_ILOKO,                 "ilo", "PH", k0    },
+    { LANGUAGE_USER_ENGLISH_ZAMBIA,         "en", "ZM", k0    },
     { LANGUAGE_MULTIPLE,                   "mul", ""  , k0    },    // multiple languages, many languages are used
     { LANGUAGE_UNDETERMINED,               "und", ""  , k0    },    // undetermined language, language cannot be identified
     { LANGUAGE_NONE,                       "zxx", ""  , k0    },    // added to ISO 639-2 on 2006-01-11: Used to declare the absence of linguistic information

include/i18nlangtag/lang.h

@@ -749,6 +749,7 @@ namespace o3tl
 #define LANGUAGE_USER_JUHOAN                LanguageType(0x06A1)
 #define LANGUAGE_USER_NARO                  LanguageType(0x06A2)
 #define LANGUAGE_USER_ILOKO                 LanguageType(0x06A3)
+#define LANGUAGE_USER_ENGLISH_ZAMBIA        LanguageType(0xA009)  /* makeLangID( 0x28, getPrimaryLanguage( LANGUAGE_ENGLISH_UK)) */
 
 
 /* XXX Add new user defined LCIDs ^^^ there.

svtools/inc/langtab.hrc

@@ -416,7 +416,8 @@ const std::pair<const char*, LanguageType> STR_ARR_SVT_LANGUAGE_TABLE[] =
     { NC_("STR_ARR_SVT_LANGUAGE_TABLE", "Malay Arabic (Brunei Darussalam)") , LANGUAGE_USER_MALAY_ARABIC_BRUNEI },
     { NC_("STR_ARR_SVT_LANGUAGE_TABLE", "Juǀ’hoan") , LANGUAGE_USER_JUHOAN },
     { NC_("STR_ARR_SVT_LANGUAGE_TABLE", "Naro") , LANGUAGE_USER_NARO },
-    { NC_("STR_ARR_SVT_LANGUAGE_TABLE", "Iloko") , LANGUAGE_USER_ILOKO }
+    { NC_("STR_ARR_SVT_LANGUAGE_TABLE", "Iloko") , LANGUAGE_USER_ILOKO },
+    { NC_("STR_ARR_SVT_LANGUAGE_TABLE", "English (Zambia)") , LANGUAGE_USER_ENGLISH_ZAMBIA }
 };
 
 #endif