mdocml: fix behavior when localized man pages are present.

Using the -a option with makewhatis(8) makes it scan every file under
the configured manpaths, instead of only the ones in directories that
match "man*". When localized man pages are present, this makes it so
files under the "$some_lang/man*" directories are also indexed, which
can lead, as shown in #28146, to `man w3m` displaying a localized man
page instead of the default english one from /usr/share/man/man1/w3m.1.

Without a mandoc.db in the manpath, man(1) behaves predictably, and
removing from -a from the makewhatis(8) invocations makes it behave
predictably even with a mandoc.db available.

Users who wish to use localized man pages are expected to configure
manpaths in man.conf(5) or use the MANPATH env var.

Fixes #28146

srcpkgs/mdocml/INSTALL

@@ -1,6 +1,6 @@
 case "$ACTION" in
 post)
 	echo "Regenerating man db..."
-	usr/bin/makewhatis -a -Tutf8
+	usr/bin/makewhatis -Tutf8
 	;;
 esac

srcpkgs/mdocml/files/makewhatis.cron.daily

@@ -1,3 +1,2 @@
 #!/bin/sh
-makewhatis -a -Tutf8
-exit $?
+exec makewhatis -Tutf8

srcpkgs/mdocml/template

@@ -1,7 +1,7 @@
 # Template file for 'mdocml'
 pkgname=mdocml
 version=1.14.5
-revision=6
+revision=7
 wrksrc="mandoc-${version}"
 build_style=configure
 make_build_args="all man.cgi"