MANSUFFIX should be left empty

That variable isn't for us, it's for any user, distributor or package
builder that wants one after the section number.  "ssl" seems to be
popular...
Reviewed-by: NMatt Caswell <matt@openssl.org>

Configurations/unix-Makefile.tmpl

@@ -85,7 +85,10 @@ ENGINESDIR={- use File::Spec::Functions;
 MANDIR=$(INSTALLTOP)/share/man
 HTMLDIR=$(INSTALLTOP)/share/doc/$(BASENAME)/html
 
-MANSUFFIX=ssl
+# MANSUFFIX is for the benefit of anyone who may want to have a suffix
+# appended after the manpage file section number.  "ssl" is popular,
+# resulting in files such as config.5ssl rather than config.5.
+MANSUFFIX=
 HTMLSUFFIX=html