mdocml: Update historical record to be historical and not made-up.

[kristaps@mdocml.bsd.lv]

Log Message:
-----------
Update historical record to be historical and not made-up.  Data from
<manpages.bsd.lv/history.html>.  Ok schwarze@ (with modifications) and
Jason McIntyre.

Modified Files:
--------------
    mdocml:
        roff.7

Revision Data
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Index: roff.7
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/roff.7,v
retrieving revision 1.34
retrieving revision 1.35
diff -Lroff.7 -Lroff.7 -u -p -r1.34 -r1.35
--- roff.7
+++ roff.7
@@ -945,14 +945,22 @@ using the next-line syntax.
 .%U http://heirloom.sourceforge.net/doctools/troff.pdf
 .Re
 .Sh HISTORY
-The RUNOFF typesetting system was written in PL/1 for the CTSS
-operating system by Jerome ("Jerry") E. Saltzer in 1961.
-It was first used as the main documentation tool by Multics since 1963.
-Robert ("Bob") H. Morris ported it to the GE-635 and called it
+The RUNOFF typesetting system, whose input forms the basis for
 .Nm ,
-Doug McIlroy rewrote it in BCPL in 1969,
-Joseph F. Ossanna rewrote it in PDP-11 assembly in 1973,
-and Brian W. Kernighan rewrote it in C in 1975.
+was written in MAD and FAP for the CTSS operating system by Jerome E.
+Saltzer in 1964.
+Doug McIlroy rewrote it in BCPL in 1969, renaming it
+.Nm .
+Dennis M. Ritchie rewrote McIlroy's
+.Nm 
+in PDP-11 assmebly for
+.At v1 ,
+Joseph F. Ossanna improved roff and renamed it nroff
+for
+.At v2 ,
+then ported nroff to C as troff, which Brian W. Kernighan released with
+.At v7 .
+In 1989, James Clarke re-implemented troff in C++, naming it groff.
 .Sh AUTHORS
 .An -nosplit
 This
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