Remove galsim_json and change galsim_yaml -> galsim
(#460)
Make sure galsim executable doesn't import itself.
(#460)
Move sizeof_SIFD.cpp to src directory.  Installed normally, not with scons examples.
(#460)
Remove need for scons examples by adding installed_python script.
(#460)
Add back galsim_yaml and galsim_json for backwards compatibility.
(#460)