build: add variable to restrict po language and use it for the core i18n packages

build/module.mk

@@ -26,7 +26,7 @@ luasource:
 	for i in $$(find dist -name .svn -or -name .gitignore); do rm -rf $$i || true; done
   ifneq ($(PO),)
 	for file in $(PO); do \
-	  cp $(HOST)/lua-po/$$file.*.lua dist$(LUCI_MODULEDIR)/i18n/; \
+	  cp $(HOST)/lua-po/$$file.$(if $(PO_LANG),$(PO_LANG),*).lua dist$(LUCI_MODULEDIR)/i18n/; \
 	done
   endif
 

i18n/english/Makefile

@@ -1,4 +1,5 @@
 PO = default cbi admin-core sysauth wifi
+PO_LANG = en
 
 include ../../build/config.mk
 include ../../build/module.mk

i18n/french/Makefile

@@ -1,4 +1,5 @@
 PO = default cbi admin-core sysauth wifi
+PO_LANG = fr
 
 include ../../build/config.mk
 include ../../build/module.mk

i18n/german/Makefile

@@ -1,4 +1,5 @@
 PO = default cbi admin-core sysauth wifi
+PO_LANG = de
 
 include ../../build/config.mk
 include ../../build/module.mk

i18n/greek/Makefile

@@ -1,4 +1,5 @@
 PO = default cbi admin-core sysauth wifi
+PO_LANG = el
 
 include ../../build/config.mk
 include ../../build/module.mk

i18n/italian/Makefile

@@ -1,4 +1,5 @@
 PO = default cbi admin-core sysauth wifi
+PO_LANG = it
 
 include ../../build/config.mk
 include ../../build/module.mk

i18n/japanese/Makefile

@@ -1,4 +1,5 @@
 PO = default cbi admin-core sysauth wifi
+PO_LANG = ja
 
 include ../../build/config.mk
 include ../../build/module.mk

i18n/portuguese_brazilian/Makefile

@@ -1,4 +1,5 @@
 PO = default cbi admin-core sysauth wifi
+PO_LANG = pt-br
 
 include ../../build/config.mk
 include ../../build/module.mk

i18n/russian/Makefile

@@ -1,4 +1,5 @@
 PO = default cbi admin-core sysauth wifi
+PO_LANG = ru
 
 include ../../build/config.mk
 include ../../build/module.mk