Support different character encoding schemes (ISO-8859-#)

[DipSwitch]

Currently the application uses UTF-8 or UTF-16 encoding for each string, but for embedded devices this sometimes is to large / difficult to implement since you cannot easily create lookup tables to map the characters to bitmaps. So most of the times (to my knowledge) ISO-8859-# encoding is used embedded.
So it could be useful to be able to select the characterset encoding per server connection, or in an application wide setting.

[ilgrank]

@DipSwitch : the author has not been updating this project since some year.. keep that in mind if you expect a reply :)