fdo#76324: Use one static SvXMLTokenMap object, it's faster.
fdo#76324: Use one static SvXMLTokenMap object, it's faster.

For me it saves ~10% of load time for calc document with 2000 comments.
Thanks to Michael for noticing this oddity.

Change-Id: Id44f44c02df2ae9360d02c28081601f5f7a8ea27

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core