nvda

Report all shapes in Powerpoint

#7112

Merged

Add a 'roleText' property to NVDAObjects. If its value is a string, this string is used in place of the label looked up from the 'role' property, in both speech and braille, allowing an NVDAObject to override the presented role.

Powerpoint: ensure that all shape types are presented to the user in speech and braille.

Remove accidental symbols in comments.