update to 6.2-RELEASE

$ cd <srcdir>
$ cvs update -PdAC -I! -r RELENG_6_2_0_RELEASE
$ MAKEOBJDIRPREFIX=<wrkdir> make buildworld
$ MAKEOBJDIRPREFIX=<wrkdir> make buildkernel
$ MAKEOBJDIRPREFIX=<wrkdir> sudo make installkernel
<reboot>
$ sudo  mergemaster -p -m <srcdir>/etc
$ MAKEOBJDIRPREFIX=<wrkdir> sudo make installworld
$ MAKEOBJDIRPREFIX=<wrkdir> sudo make delete-old
$ sudo  mergemaster -ai -m <srcdir>/etc
<reboot>