main/[various]: Add group and use it as primary in .pre-* scripts.

Fixes the problem I unintentionally brought in commit ccc056dbf9d3:
system user creation doesn't add same named group and uses nogroup as
primary group unless explicitly specified via -G.

Brings status quo regarding primary groups of users created in packages:
- main/apache2
- main/aports-build
- main/atheme-iris
- main/clamav
- main/clamsmtp
- main/coova-chilli
- main/dhcp
- main/djbdns
- main/ez-ipupdate
- main/fetchmail
- main/freeswitch
- main/gitolite
- main/gnats
- main/gross
- main/icecast
- main/memcached
- main/ngircd
- main/openntpd
- main/snort
- main/squid
- main/transmission
- main/znc

2 files changed, 4 insertions, 2 deletions

diff --git a/main/djbdns/dnscache.pre-install b/main/djbdns/dnscache.pre-install
index 664732ca54..f59549a438 100644
--- a/main/djbdns/dnscache.pre-install
+++ b/main/djbdns/dnscache.pre-install
@@ -1,5 +1,6 @@
 #!/bin/sh
 
-adduser -S -D -H -h /etc/dnscache -g dnscache -s /sbin/nologin dnscache 2>/dev/null
+addgroup -S dnscache 2>/dev/null
+adduser -S -D -H -h /etc/dnscache -G dnscache -g dnscache -s /sbin/nologin dnscache 2>/dev/null
 
 exit 0
diff --git a/main/djbdns/tinydns.pre-install b/main/djbdns/tinydns.pre-install
index 85ba7e7e20..da47789e25 100644
--- a/main/djbdns/tinydns.pre-install
+++ b/main/djbdns/tinydns.pre-install
@@ -1,5 +1,6 @@
 #!/bin/sh
 
-adduser -S -D -H -h /etc/tinydns -s /sbin/nologin -g tinydns tinydns 2>/dev/null
+addgroup -S tinydns 2>/dev/null
+adduser -S -D -H -h /etc/tinydns -s /sbin/nologin -G tinydns -g tinydns tinydns 2>/dev/null
 
 exit 0