Non-Windows target encodings and RTF

[Former user]

Original [issue 208](https://code.google.com/p/okapi/issues/detail?id=208) created by @ysavourel on 2012-02-07T23:07:19.000Z:

Currently the output encoding of the RTF packages are forced to some windows encoding for backward compatibility. But the targetEncoding value in the manifest needs to reflect the real target encoding selected by the user.

[Former user]

Comment [1.](https://code.google.com/p/okapi/issues/detail?id=208#c1) originally posted by @ysavourel on 2012-02-07T23:07:42.000Z:

[Jim Hargrave (OLD)]

RTF based formats rarely used.