Add macro trd geometrie v20b, refs #1851
v20b corresponds to the enlarged z-expansion for the layers and the start positions of 17n. In Addition the correlated header files for the CbmTrdPads are added
MRs for the parameters (24) and geometry (71) files are opened accordingly.
PAL edit:Linked to issue #1851, added index of other repos MR
Edited by Pierre-Alain Loizeau