Deleted 200mhz +fixes

cusd SOD >.<
Increase max readahead
Disable gpu debugs
LOAD_FREQ (4*HZ+61) avoids loadavg Moire

http://ripke.com/loadavg/moire
random: entropy tweaks are all the rage nowadays

use nonblocking for all.  Read this web page:
http://lwn.net/Articles/489734/
Disable fsync