bind: build with threads and update configure options
Build without threads for bind is inherited from legacy openembedded.
All libc's support proper threading on Linux now, so enable threads
support for bind.
It is also need to disable static library build which cause package dhcp
fail to build after enable bind threads support.
Options devpoll and epoll are configured to choose most preferable
multiplex method for unix socket. The priorities are: epoll > poll >
select. When set '--enable-epoll', it just defines a var and include
header file that is available for cross compile. So use epoll for bind.
Add PACKAGECONFIG 'urandom' that could use /dev/urandom as random device.
Update file/directory ownerships to fix daemon start failure.
Signed-off-by: Kai Kang <kai.kang@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
