AthenaCommon: remove support for "OldStyleConfig"
Remove support for some very old (legacy) job option formalisms:
- Adding algorithms to the AthAlgSeq via
theApp.TopAlg += ["HelloAlg/Alg1"]
- Declaring output streams via
theApp.OutStream
- Creating configurables via
myAlg = Algorithm("HelloAlg/Alg1")
Also rename the default algorithm sequence from "TopAlg" to "AthAlgSeq" so we can get rid of the backwards compatibility code.
Note that "old style" here refers to code that was in use even before the current legacy job options that we just replaced by CA.
Edited by Frank Winklmeier