[Solid_software] test solid conversion from svn to git and github

[Zhiwen Zhao]

Dear All

We have been talking about a conversion from svn to git and github
here is just a test
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The svn location
https://jlabsvn.jlab.org/svnroot/solid/

the github organization including all repo are at
https://github.com/jlabsolid/

event generator will have individual repo
for example "evgen_BHphoton" converted from svn "evgen/genTCS"

code running simulation,digitization simulation,analyzing simulation 
result are all under one repo "solid_gemc2
It's converted from svn "solid_gemc2"
then add digitization/gem from Weizhi's current GEM digitization
then add study/tracking from Weizhi's current tracking
We can add mrpc digitization later

All code for individual subsystem, not closely linked to current 
simulation, should be in a separate repo
for example "subsystem_baffle" converted from svn "subsystem/baffle"

We should start use branches for devel and keep master as production version
All conversion and merge are done by "git svn" and "git subtree" with 
history preserved
=====================================================

Please test and give comments, especially if you see anything missing or 
wrong.
Once we think it's OK, we can freeze the svn and do a clean conversion.

Thanks

Zhiwen