[gettext] Show info about gettext.

gettext (System) means gettext from the libc library.
gettext (ELinks) builtin from src/intl/gettext.

src/intl/gettext/libintl.c

@@ -222,3 +222,25 @@ set_language(int language)
 		_nl_msg_cat_cntr++;
 	}
 }
+
+static void
+init_gettext(struct module *module)
+{
+}
+
+static void
+done_gettext(struct module *module)
+{
+	mem_free_set(&LANGUAGE, NULL);
+}
+
+struct module gettext_module = struct_module(
+	/* name: */		"gettext (ELinks)",
+	/* options: */		NULL,
+	/* hooks: */		NULL,
+	/* submodules: */	NULL,
+	/* data: */		NULL,
+	/* init: */		init_gettext,
+	/* done: */		done_gettext
+);
+

src/intl/libintl.c

@@ -221,3 +221,24 @@ set_language(int language)
 
 	_nl_msg_cat_cntr++;
 }
+
+static void
+init_gettext(struct module *module)
+{
+}
+
+static void
+done_gettext(struct module *module)
+{
+	mem_free_set(&LANGUAGE, NULL);
+}
+
+struct module gettext_module = struct_module(
+	/* name: */		"gettext (System)",
+	/* options: */		NULL,
+	/* hooks: */		NULL,
+	/* submodules: */	NULL,
+	/* data: */		NULL,
+	/* init: */		init_gettext,
+	/* done: */		done_gettext
+);

src/intl/libintl.h

@@ -3,12 +3,15 @@
 
 #include "config/options.h"
 #include "intl/charsets.h"
+#include "main/module.h"
 #include "terminal/terminal.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+extern struct module gettext_module;
+
 #ifdef CONFIG_GETTEXT
 extern int _nl_msg_cat_cntr;
 

src/main/module.c

@@ -24,6 +24,9 @@
 #include "ecmascript/ecmascript.h"
 #include "formhist/formhist.h"
 #include "globhist/globhist.h"
+#ifdef CONFIG_NLS
+#include "intl/libintl.h"
+#endif
 #include "mime/mime.h"
 #include "network/ssl/ssl.h"
 #include "protocol/protocol.h"
@@ -43,6 +46,9 @@ struct module *main_modules[] = {
 struct module *builtin_modules[] = {
 	&periodic_saving_module,
 	&viewer_module,
+#ifdef CONFIG_NLS
+	&gettext_module,
+#endif
 #ifdef CONFIG_CSS
 	&css_module,
 #endif