Problem of ko.po on branch REL9_5_STABLE

Hi,

When I checked the encoding of the Po files, I noticed that src/bin/pg_config/po/ko.po on REL9_5_STABLE branch seemed a little different.
The ‘Content-Type’ of this file and file’s encoding are different from those under other modules, as follows:
 
src/bin/pg_config/po/ko.po:
       "Content-Type: text/plain; charset=euc-kr\n"
src/bin/initdb/po/ko.po:
       "Content-Type: text/plain; charset=UTF-8\n"
 
  These even different from the other branches, as follows:

REL9_5_STABLE src/bin/pg_config/po/ko.po:
       "Content-Type: text/plain; charset=euc-kr\n"
REL9_6_STABLE src/bin/pg_config/po/ko.po
       "Content-Type: text/plain; charset=UTF-8\n"
 
Is there any particular reason for doing this? Or are there any challenges for compatible problems?
Thanks in advance.

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Yang Rong
Development Department II Software Division II Nanjing Fujitsu Nanda Software Tech. Co., Ltd.(FNST)
ADDR.: No.6 Wenzhu Road, Software Avenue,
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