[core] set default server_tag in server.c

(instead of in configfile.c)

(now only server.c depends on version.h
 and must be recompiled after each commit)

src/configfile.c

@@ -9,7 +9,6 @@
 #include "configfile.h"
 #include "proc_open.h"
 #include "request.h"
-#include "version.h"
 
 #include <sys/stat.h>
 
@@ -221,7 +220,7 @@ static int config_insert(server *srv) {
 		s->server_name   = buffer_init();
 		s->error_handler = buffer_init();
 		s->error_handler_404 = buffer_init();
-		s->server_tag    = buffer_init_string(PACKAGE_DESC);
+		s->server_tag    = buffer_init();
 		s->errorfile_prefix = buffer_init();
 	      #if defined(__FreeBSD__) || defined(__NetBSD__) \
 	       || defined(__OpenBSD__) || defined(__DragonFly__)

src/server.c

@@ -1263,6 +1263,10 @@ static int server_main (server * const srv, int argc, char **argv) {
 		return -1;
 	}
 
+	if (buffer_is_empty(srv->config_storage[0]->server_tag)) {
+		buffer_copy_string_len(srv->config_storage[0]->server_tag, CONST_STR_LEN(PACKAGE_DESC));
+	}
+
 	if (HANDLER_GO_ON != plugins_call_set_defaults(srv)) {
 		log_error_write(srv, __FILE__, __LINE__, "s", "Configuration of plugins failed. Going down.");
 		return -1;