.hosts: Provide a template .hosts.

dialogs/.hosts: Explanation about the empty file. 

share/http/.hosts

+#
+# Default access-list for VLC HTTP interface
+# $Id$
+#
+
+# localhost
+::1
+127.0.0.1
+
+# link-local addresses
+#fe80::/64
+
+# private addresses
+#fc00::/7
+#fec0::/10
+#10.0.0.0/8
+#172.16.0.0/12
+#192.168.0.0/16
+
+# The world
+# (comment this out to obtain a safe default)
+::/0
+0.0.0.0/0
+

share/http/dialogs/.hosts

+# The files in this directory shouldn't be accessed by http.
+# They are included in other HTML pages.
+# Hence this .hosts to allow nobody.
+