Ok, small progress made. iphb built fine. libhildondesktop rebuilt against "new" version. libdevlock: build fails if libcal.pc is missing. Compared to original, the CSSU RE'd version appears to be missing libcal related depends and build-deps. After installing libcal-dev and libcal1: Turns out that CSSU libcal is missing dh_makeshlibs call in rules (currently commented out).