Port menews_jisan.c from FireRed

ld_script.txt

@@ -61,7 +61,7 @@ SECTIONS {
         asm/mevent_server.o(.text);
         asm/mevent_server_ish.o(.text);
         asm/mevent_server_helpers.o(.text);
-        asm/mevent_news.o(.text);
+        src/mevent_news.o(.text);
         asm/union_room_chat.o(.text);
         asm/berry_crush.o(.text);
         src/berry_powder.o(.text);