Add a string indentation function
Add a string indentation function

Using the Lisp pretty-printer was too much a hassle, and even though it
would have worked more beautifully (breaking lines on the MLW text), it
is enough for our current purposes to just use left-padding as we need,
and thus we introduce an indent% function for such a purpose, along
clir->mlw%indent (read: clir to mlw modulo indent) which outputs
indented text, unless it matches a certain keyword parameter.

cavi-art/cl-clir2mlw