port of rev. 12394:   [feature] OOXML mime types
port of rev. 12394:
  [feature] OOXML mime types

note: 12394 also includes previous changes:

port of rev. 11152:
  [bugfix] changed mime-type text/xml to application/xml . As requested in https://sourceforge.net/tracker/?func=detail&aid=2930518&group_id=17691&atid=117691 
port of rev. 11158:
  [ignore] Added text/xml as deprecated document type. 
port of rev. 11159:
  [bugfix] changed mime-type text/xml to application/xml ; added too much
port of rev. 11800:
  [ignore] update mime-types table

svn path=/stable/eXist-1.4.x/; revision=13420

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