Do not use /usr/ports/infrastructure/man/ by default because this

directory is not contained in OpenBSD base, and because even people
having the directory often don't understand that they need to run
makewhatis(8) - and instead complain about the resulting warnings.
This commit reverts revisions 1.17 and 1.21.
Requested by deraadt@ millert@ kettenis@ who argue that people
using /usr/ports/infrastructure/bin/ already need to set PATH,
so editing man.conf (or, though more fragile, setting MANPATH)
should not be a big deal for them.

src/etc/man.conf

@@ -1,4 +1,4 @@
-#	$OpenBSD: man.conf,v 1.21 2014/12/09 05:55:42 schwarze Exp $
+#	$OpenBSD: man.conf,v 1.22 2015/01/20 19:17:28 schwarze Exp $
 
 # Sheer, raging paranoia...
 _version	BSD.2
@@ -6,7 +6,6 @@ _version	BSD.2
 # The whatis/apropos database.
 _whatdb		/usr/share/man/whatis.db
 _whatdb		/usr/X11R6/man/whatis.db
-_whatdb		/usr/ports/infrastructure/man/whatis.db
 _whatdb		/usr/local/man/whatis.db
 
 # Subdirectories for paths ending in '/', IN SEARCH ORDER.
@@ -32,7 +31,7 @@ _build		.tbl.gz		/usr/bin/gzcat %s | /usr/bin/mandoc
 # directory with all of the subdirectories listed for the keyword _subdir.
 
 # default
-_default	/usr/{share,X11R6,local,ports/infrastructure}/man/
+_default	/usr/{share,X11R6,local}/man/
 
 # Other sections that represent complete man subdirectories.
 X11		/usr/X11R6/man/