Socket IPC between 32bit machine and 64bit machine failed.

[at-wat]

原因と思われる箇所
sh_bando@robobnd-l:~/lab/researches/programs/platform$ find ./open-spur/ -name ".h" | xargs grep -n 'long'

./open-spur/include/command.h:63:void message_return( struct ipcmd_t *ipcmd, long retpid, YPSpur_msg * res_msg );
./open-spur/include/ypparam.h:266: long msg_type;
./open-spur/include/ypparam.h:267: long pid;
./open-spur/include/ypparam.h:300:#define YPSPUR_MSG_SIZE (sizeof(YPSpur_msg) -sizeof(long))

(Transferred from readmine ticket. Originally by S. Bando.)