(removed 3.13.1 compatibility line completely)
Added dependency for cdCommands so it gets rebuilt if $(TOP)/bin changes
i.e. possibly when $(TOP)/bin/$(T_A) is created.
IOCS_APPL_TOP work properly.
NB: All cdCommands paths will potentially be modified, based on the
difference between the left-hand part of the host's path to TOP and
the setting of IOCS_APPL_TOP.