CMake: add the tz_ translation files to the i18n build

CMakeModules/CalamaresAddTranslations.cmake

@@ -67,8 +67,12 @@ macro(add_calamares_translations language)
     # calamares and qt language files
     set( calamares_i18n_qrc_content "${calamares_i18n_qrc_content}<qresource prefix=\"/lang\">\n" )
     foreach( lang ${CALAMARES_LANGUAGES} )
-        set( calamares_i18n_qrc_content "${calamares_i18n_qrc_content}<file>calamares_${lang}.qm</file>\n" )
-        list( APPEND TS_FILES "${CMAKE_SOURCE_DIR}/lang/calamares_${lang}.ts" )
+        foreach( tlsource "calamares_${lang}" "tz_${lang}" )
+            if( EXISTS "${CMAKE_SOURCE_DIR}/lang/${tlsource}.ts" )
+                set( calamares_i18n_qrc_content "${calamares_i18n_qrc_content}<file>${tlsource}.qm</file>\n" )
+                list( APPEND TS_FILES "${CMAKE_SOURCE_DIR}/lang/${tlsource}.ts" )
+            endif()
+        endforeach()
     endforeach()
 
     set( calamares_i18n_qrc_content "${calamares_i18n_qrc_content}</qresource>\n" )