[G12] versions of mc tools

[Craig Bookwalter]

  g12ers,
     Last night I forgot to ask about which version of a1c one should 
use when processing MC. I remember hearing that we should use the pass1 
branch of the SVN repository so we're using the same code to cook real 
data and MC data. However, do we want all MC-related tools to be built 
from the pass1 branch, or just a1c? It seems strange to me to generate 
detector responses with a GSIM linked against one version of detector 
libraries and then reconstruct them with a1c linked against a different 
version of the detector libraries. Perhaps all that matters is that the 
detector libraries themselves are from pass1, since a1c mostly just 
organizes input and output and sets up calls to those libraries. I have 
no idea what GSIM might use the detector libraries for--I just know I 
have to link them to get it to compile.

At present, ~clasg12/local/scripts/sample_gsim_desktop.sh uses tools 
from the clas6 STABLE 32-bit build, which is not what was used for g12 
pass1.

Any thoughts?

--cb