[Halla12_software] BaBar, CDF, ZEUS magnet maps

[Zhiwen Zhao]

hi, folks

I produced BaBar, CDF, ZEUS  magnet maps according to Paul's input, now 
we can run GEMC with different fields even though CDF and ZEUS geometry 
are still now implemented yet)

For the general design info, see here
https://hallaweb.jlab.org/wiki/index.php/Solid_Magnet
For GEMC map file info, see here
https://hallaweb.jlab.org/wiki/index.php/Magnetic_Field_Map

Paul, I put the AM files into svn and sf7/dat files into Solid website 
due to their large size. Both location should be backup by CC regularly.
I suggest we use them for later update.

cheers

Zhiwen