The biggest issue was related to ToolFactory now by default producing
private tools. Initally I tried to change some trigger code to use private
tools, but that proved more difficult than I expected, so instead I changed
the configuration to make public tool instances. I changed the initialization
of EMShowerBuilder.cxx to work propery for trigger (since for trigger the
cell container is passed in and doesn't need to use a handle), and I removed
unnecessary includes to IEMBremCollectionBuilder.h in the trigger code, since
that file no longer exists.


Former-commit-id: 31d6d581ade78dca798cdc10cd41369efb791e6d