update BR

- bison -- make: bison: Command not found
- flex -- make: flex: Command not found
- libev-devel -- include/ipc.h:13:16: fatal error: ev.h: No such file or directory
- pcre-devel -- include/data.h:19:18: fatal error: pcre.h: No such file or directory
- startup-notification-devel -- include/data.h:14:31: fatal error: libsn/sn-launcher.h: No such file or directory
- xcb-util-devel -- root_atom_contents.c:14:25: fatal error: xcb/xcb_aux.h: No such file or directory
- xorg-lib-libXcursor-devel -- src/xcursor.c:11:33: fatal error: X11/Xcursor/Xcursor.h: No such file or directory
- yajl-devel -- include/ipc.h:15:27: fatal error: yajl/yajl_gen.h: No such file or directory
- pkgconfig