- fixes to let Hacx load its own extended font.

There were two issues blocking this:

* the Doom BigUpper font was loaded for all Doom-based games. It is only valid for original idgames releases and nothing more.
* Hacx.wad defines its BigFont in FONTDEFS which blocks all custom fonts. Since the Hacx font and GZDoom's base BigFont are very similar, the FONTDEFS lump now gets deleted from the WAD directory.

wadsrc/static/iwadinfo.txt

@@ -83,6 +83,7 @@ IWad
 	MustContain = "MAP01", "HACX-R"
 	BannerColors = "00 00 a8", "a8 a8 a8"
 	Load = "hacx_gzdoom_stuff.pk3"
+	DeleteLumps = "FONTDEFS"
 }
 
 IWad