Re: man pages are littered with .ft C and others

Jonas Fonseca [off-list ref] writes:

I was able to solve this problem with this patch, which adds a XSL file
used specifically for DOCBOOK_XSL_172=YesPlease and where dots and
backslashes are escaped properly so they won't be substituted to the
wrong thing further down the "DocBook XSL pipeline". Doing the escaping
in the existing callout.xsl breaks v1.70.1. Hopefully v1.73 will end
this part of the manpage nightmare.

I checked this with 1.71, 1.69 and 1.72 (with DOCBOOK_XSL_172).
It seems not to regress.

Applied to 'master'.  Thanks.