CORE-18304
The included Telnet client does not support displaying messages with Unicode characters in them.
This is a problem, because even though localisation for the program was made for ReactOS,
it doesn't work properly.
- Make the `printm` function load and format messages using wide character APIs instead of the narrow ones.
- Add format specifiers to the resource files (this is necessary, as there are a lot of places, where narrow strings
are used in the program, and passed as parameters to `printm`).
Marcin Jabłoński