[Boost-testing] Boost.Serialization build is fixed.

[Rene Rivera <grafik.list@xxxxxxxxxxxxxxxxxxxxx>]

...many hours later...

The build of serialization lib should be working again. The real problem 
causing the break was a simple missing return from one of the 
requirement rules Robert wrote.

Instead of just fixing that I took it upon myself to factor out the 
rules that Robert had into a single 
libs/serialization/build/serialization.jam file. This concentrates all 
the special logic for when to build the serialization library, and 
things that depend on the serialization library.

Also I made the logic of accounting for when the DLLs can't be built 
work for the cases where locale support conflicts with the required 
dynamic runtime, i.e. CW8. I applied this *only* to CW8. So if this 
needs to be extended to others holler or go in an change it. Should be 
easy to see where to make that change now :-)

Enjoy.

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