new macro for installer language files, which does not require the name of the language to be set (this is already done by the standard NSIS language files)

git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@5500 212acab6-be3b-0410-9dea-997c60f758d6

Include/LangFile.nsh

@@ -22,7 +22,7 @@ Copyright
 
   !define LangFileString "!insertmacro LANGFILE_SETSTRING"
 
-  !define LANGFILE_SETNAMES  
+  !define LANGFILE_SETNAMES
   !include "${FILENAME}"
   !undef LANGFILE_SETNAMES
 
@@ -47,7 +47,7 @@ Copyright
 
 !macro LANGFILE IDNAME NAME
 
-  ;Start of langauge file, set names
+  ;Start of standard NSIS language file
 
   !ifdef LANGFILE_SETNAMES
 
@@ -65,6 +65,22 @@ Copyright
 
 !macroend
 
+!macro LANGFILE_EXT IDNAME
+
+  ;Start of installer language file
+  
+  !ifdef LANGFILE_SETNAMES
+
+    !ifdef LANGFILE_IDNAME
+      !undef LANGFILE_IDNAME
+    !endif
+
+    !define LANGFILE_IDNAME "${IDNAME}"
+
+  !endif
+
+!macroend
+
 !macro LANGFILE_SETSTRING NAME VALUE
 
   ;Set define with translated string