Fix modifiers in "Twm Keys" menu

[Maxime Soulé]

Hi,

In "Twm Keys" menu, modifiers are not correctly displayed
https://github.com/maxatome/ctwm-mirror/commit/3327c2a8bad4550f54a25cf852aca3dcb9d977b8
fixes them.

+ it seems "make indent" did not run for otp.c after last commit:
https://github.com/maxatome/ctwm-mirror/commit/2bda489d61735afbea58bf567fee52302ebda60c
fixes it.

Regards,

Max.