Hola all.

Wrote another confcache implementation (this time not bound to ebd 
thank god), and stuck an ebuild and portage patch for it in 
http://dev.gentoo.org/~ferringb/confcache/ .

Should be a bit stricter then the 2.1 implementation; for those not 
aware of what it is, it's a global autoconf cache + staleness 
detection.  End result is a 2-4x faster configure run when the cache 
is fully primed, decreasing levels of gain if the cache isn't full.  
Worst case, cache is invalidated/missing, which is normal 
configure runtifme + minor overhead.

Portage integration is pretty minor; just an econf modification.  
Feedback/testing desired, so have fun with it.
~harring