Set RND after save / load

`L [1-26]` should set RND to 0 after load, and `Q [1-26]` should set RND
to 1 after save. This behavior is used by the following games:

ayumi_fd, prog_fd, funnybee_cd, funnybee_fd, onlyyou, prog_cd, ayumi_cd,
yakata3_cd, otome, hashirionna2

Especially in hashirionna2, not setting RND breaks the control flow.

src/sys/nact_sys2.cpp

@@ -763,6 +763,7 @@ void NACT_Sys2::cmd_l()
 			sco.page_jump(next_page, next_addr);
 
 			mako->play_music(next_music);
+			RND = 0;
 		}
 	}
 }
@@ -918,6 +919,7 @@ void NACT_Sys2::cmd_q()
 
 			fio->write(buffer, 9510);
 		}
+		RND = 1;
 	}
 }