hal_0.5.11: Move back to the hal directory and make it default for Openmoko

hal_0.5.11: Move back to the hal directory and make it default for Openmoko

    hal 0.5.11 is fixing many, many, many memory leaks and is required
    if someone wants to have the device powered on for more than two
    days. I heavily encourage other distributions to switch as well.

    I can not see the autoreconf errors mentioned in koen's move
    a765a58dfd410eef8147e2e6ad1d0e4cef922c58 he is free to send them to
    me.

    I'm using tmp/staging/i686-linux/usr/bin/autoreconf --version
    autoreconf (GNU Autoconf) 2.61