Newly supported files: text/menu/*.msg (higher priority than .asc when the
terminal supports IBM extened ASCII, aka CP437). These are the same format
as .asc files (and supported more readily by PabloDraw).
Newly supported files: text/menu/*.seq - native PETSCII files for PETSCII
terminals only. Support in the underlying putmsg() function is still
pending.
Also, the text/*.msg files now supports alternative file formats for
RIP/ANSI/PETSCII, if the files exist.
WIP menu support removal.
The new menu/display file selection priority will be detailed on
wiki.synchro.net, but rest assured, it's backwards compatible with
the previous/old priority with the exception of the removal of WIP support
and HTML support.