WIP: Migrated tauRecTools to ReadDecorHandle for accessing pileup values from EventInfo
This is a followup on !31668 (merged) , which introduced the access to
pileup information from EventInfo
via ReadDecorHandle
-s
Also cleaned CMakeLists.txt
from atlas_depends_on_subdirs()
Tagging @xiaozhon and @adbailey who made recent changes in the classes affected by this MR
Marking it as WIP: until !32712 (merged) gets merged
Edited by Vakhtang Tsulaia