ann: release google_hash

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Dec 19, 2009, 11:27:34 PM12/19/09

to ruby optimization

As an attempt to optimize for MRI's GC and move elements into hash, my
first attempt is

google_hash

it allows for
a = GoogleHash.new
a[3] = 4
>> a[3]
=> 4

and allows for #each calls quite a bit faster than 1.9

while storing the keys as native int's

so far so good :)

I guess I could store them as longs, though that wouldn't gain my
anything on 32-bit machines...