n#828390: Import new line in text.
n#753460: Copying slides having same master page name.
Add append(bool) to OStringBuffer.
Force enums as ints - to avoid warning/errors.
Force int16 as int32
n#828390: Explictly export font properties.

Seems like the status is returned as default,
but the font properties needs to be still exported.
Fix fdo#70220 Superscript not imported from pptx.

Ported from: 840a8573c8cebe67ddd3c9fe106c7dbd789bb334
(Original Author: Thorsten)
n#828390: Reset charescapement.

Unless the value is reset - the escapement
seems to continue to the next set of textruns.
n#828390: Bullet sizes set wrong.
Fix compilation problems.