Fix #159 Revert "Change default timeout"

This reverts commit ca032f8541e8d7b45a56c6ebca7c390cdc402e17.
[WIP] Improved read performance
[WIP] Improved R/W

- handling (pseudo-)binary directly
[WIP] Improved proc_w32
[WIP] adjust read timeout
[WIP] fixed s:read process
[WIP] Improved s:read_line(s)
[WIP] Improved s:read_line(s)
[WIP] slightly changed comment
[WIP] Fixed proc_w32 pipe/socket I/O
[WIP] Improved s:read_line(s)
[WIP] Improved read timeout
[WIP] Revert s:read_timeout to 100 msec
[WIP] Improved read timeout (w32)
[WIP] Comment out unused functions
[WIP] Fixed timeout process (w32)
[WIP] Fixed timeout (w32)
[WIP] Fixed timeout
[WIP] Reverted timeout process
[WIP] Improved s:system() performance