Font with more than 127 characters: ignored after 127

[berni-v]

As french user, I need to display accented characters, such as é, ä, à, ë, ê, ...
The windows fonts have this possibility, special western characters are coded (ISO code) in the range 128..255. For example "é" is the character 233, therefore to allow using such characters, the easy way is to export any windows font, including the characters above nr. 127, using "GLCD FontCreator 2".
The DMD and DMD2 librairy is not able to display these characters because the character index used a "char" variable.
A simple change to "unsined char" corrects the limitation.

In DMD.cpp: function drawChar can be changed as below:

int DMD::drawChar(const int bX, const int bY, const unsigned char letter, byte bGraphicsMode)

[MrSmartus]

in library file DMD-Text.cpp need to change one string from this:
char c = letter;
to this:
unsigned char c = letter;
This way u can get charaters over 127 ASCII