bufr_decoder and bufr_encoder omit orig sub centre

[vsouvan]

For BUFR edition 4. The decoded text dump output of the bufr_decoder program does not contains the value of origine sub centre.
Also, the bufr_encoder does not read the value of origine sub centre in anyway. Thus, the value is lost if a BUFR message
is decoded and re-encoded. And the original and newly created BUFR file differs.

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Imported from Launchpad using lp2gh.

• date created: 2009-05-08T19:23:42Z
• owner: vanh-souvanlasy
• assignee: vanh-souvanlasy
• the launchpad url was https://bugs.launchpad.net/bugs/373856

[vsouvan]

(by vanh-souvanlasy)
When BUFR edition is 4 or above, the string "ORIG_SUB_CENTRE=value" will be written to the dump file
by the bufr_decoder program. Otherwise, if will be omitted.
The bufr_encoder program will read its value even if is not edition 4, but it will be used only if is for encoding BUFR edition 4 or above.