[wsrp-wsia] [change request #244] Back door to declaring charsets forMarkupTypes

Document: 0.92 Spec

Section: 5.1.10

Page/Line: 19/17

Requested by: Andre Kramer

Can MarkupType.markupType mime type include a character
set? e.g. 'text/html; charset="utf-8"'.

Reason: We have no other way to limit charsets for
a markup type so people may be tempted to do this. Perhaps the spec should
comment on this explicitly.