Cleanup 2.18 release page?

[Carlos O'Donell]

Ryan,

Could you help me cleanup the 2.18 release page?

There were some Power bits that we left as release blockers, but
I know we resolved them all as best we could for 2.18, would you
help me clean that up?

https://sourceware.org/glibc/wiki/Release/2.18#Release_Blockers.3F

My goal as always is to have the 2.18 release page be the living
document that describes the health of the 2.18 release branch.

Cheers,
Carlos.