flatten daemons menu
advanced 'ps' command for FreeBSD
add to authors
add function os()

return values
 version = 'uname -r'
 name = 'hostname'
 BSD = version if *BSD
 LINUX = version if Linux
add and use  getinfo.os() check

commit 12558010b3e8616563e4029e8803ed2f83b145bc
 add function os()

commit 12256c755d8a3238799b53076ad248d513600325
 advanced 'ps' command for FreeBSD
function load(): add 'else' for message printing
use now 'awful.util.pread()' instead 'io.popen()'
Merge branch 'FreeBSD-develop' into FreeBSD-compatible