[Clas12_verystrange] update

[Lei Guo]

I made minor changes to the abstract, and beam.tex to reconcile some  
inconsistent numbers. I deleted two plots (from g12) in the  
polarization part, as I think the g11 ones are already sufficient.

I will add the plots Michael provide (beta p, and sigma(Egamma),  
N_Omega(Egamma, cos) ) later and will circulate the "final" version  
later today.

Lei
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