Log Message:
x11/xterm: update to 388

Patch #388 - 2023/10/22
 - improve disallowPasteControls by adding a category for the special characters
   known to stty (prompted by discussion with David Leadbeater).
 - amend support of DECAUPSS, undoing change to initialization of G2/G3 so that
   pasting of GR characters works properly (report/analysis by Petri Kaukasoina).
 - update config.guess, config.sub

Patch #387 - 2023/10/15
 - add DECRQUPSS and DECAUPSS.
 - add DECRQDE (report by Jake Hamby).
 - correct indexing expression in title-stack, from patch #385 changes
   (report by Brian Lindholm).

Patch #386 - 2023/10/09
 - improve references in ctlseqs.ms (prompted by discussion with Kirill Chibisov).
 - make the maximum amount of memory used for buffering DCS and OSC strings
   configurable with maxStringParse resource (report by Daniel Franke).
 - improve performance of ReGIS when initializing the largest fontsize
   (report by Ben Wong).
 - fix regression in SIXEL colors, in patch #385 (report/patch by Jonny Langley).
 - fix typo in --with-wtmp (report/patch by Sven Joachim)