Now that GZDoom supports uppercase and lowercase characters in the BIGFONT format, this commit actually adds those characters. It contains full support for both the English and Russian (minus the letter Ё) alphabets for both Doom and Strife. As for the existing punctuation graphic lumps in Strife, all extra space is removed, and the sprite offsets are adjusted instead.
This also adjusts the English language file so that all menu header texts utilize these new characters. As a tiny extra, it also adds the letter Ё to the Strife smallfont.
(Credits to Skulltag for the uppercase B, Amuscaria for the uppercase X and Z, and @jnechaevsky for all Russian characters, taken from Russian Doom!)
The BIGFONT system works in both Heretic and Hexen; however, as Doom and Strife still depend on a lump format, they lack it.
(Also renamed the “game-raven” directory to “game-heretic”—the lumps in that folder are made for the Heretic palette, and become riddled with artifacts when loaded in Hexen).
This is dpne as a two-stage approach. TXT_LOGTEXTxxx will always take precedence over the log lumps, and TXT_ILOGxxx will only replace the original IWAD content.
This is so that PWADs replacing these lumps don't get overridden by the default texts.
A multi-lump font can be created by putting all characters into a subdirectory of fonts/ with the intended name. Each character needs to be named by its character index as hex number.
So far this is only active for the predefined small fonts
Now all this content can be localized. However, since this is actual game content it was placed in a secondary file in zd_extra.pk3, so that it won't affect the GPL-compatible status of the main one.
