(svn r1880) [Codechange] Added isocodes to langfiles and support code to strgen (Lauri Nurmi)

strings.c

@@ -23,6 +23,7 @@ typedef struct LanguagePack {
 	uint32 version;			// 32-bits of auto generated version info which is basically a hash of strings.h
 	char name[32];			// the international name of this language
 	char own_name[32];	// the localized name of this language
+	char isocode[16];	// the ISO code for the language (not country code)
 	uint16 offsets[32];	// the offsets
 	char data[VARARRAY_SIZE];
 } LanguagePack;