mandoc: mdoc(7): improve output of .At 32v The official designation

mandoc: mdoc(7): improve output of .At 32v The official designation

[schwarze]

Log Message:
-----------
mdoc(7): improve output of .At 32v
   
The official designation by AT&T was "UNIX/32V", so use that in the output.
That also makes sense because "system/architecture" is a widespread
convention to refer to the port of an operating system to a specific
architecture, in this case 32V (32bit DEC VAX).

The former wording "Version 32V AT&T UNIX" was misleading 
because 32V is not a version number.

Even though UNIX/32V was not officially designated as Version 7 by AT&T,
prepend "Version 7" because it was in fact a straightforward port of
Version 7 AT&T UNIX.  That makes it easier to understand for 21st
century readers of manual pages.
   
Suggested by nabijaczleweli at nabijaczleweli dot xyz.
Same change as in GNU troff commit 21d30728.
OK  G dot Branden dot Robinson at gmail dot com  (gbranden@ in groff)

Modified Files:
--------------
    mandoc:
        att.c

Revision Data
-------------
Index: att.c
===================================================================
RCS file: /home/cvs/mandoc/mandoc/att.c,v
retrieving revision 1.18
retrieving revision 1.19
diff -Latt.c -Latt.c -u -p -r1.18 -r1.19
--- att.c
+++ att.c
@@ -37,7 +37,7 @@ mdoc_a2att(const char *p)
 	LINE("v5",	"Version\\~5 AT&T UNIX");
 	LINE("v6",	"Version\\~6 AT&T UNIX");
 	LINE("v7",	"Version\\~7 AT&T UNIX");
-	LINE("32v",	"Version\\~32V AT&T UNIX");
+	LINE("32v",	"Version\\~7 AT&T UNIX/32V");
 	LINE("III",	"AT&T System\\~III UNIX");
 	LINE("V",	"AT&T System\\~V UNIX");
 	LINE("V.1",	"AT&T System\\~V Release\\~1 UNIX");
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