[CentOS] kernel 2.6.9-42 is faster

Gents,

Under 4.3 and the associated kernel it took 17 seconds to recompile my 
entire application
on my amd 4800+ X2. Down from 1 minute and 20 seconds on my old platform.

I just tried under the new 2.6.9-42 kernel and it is 15 seconds.

So that modification to the kernel for disk improvement seemed to help 
my compile time...
Just sharing...

Great work on 4.4.

Jerry