Fixed --with-cleanup-on-exit to work without rtldebug. Rev: src/array.h:1.62 Rev: src/dmalloc.h:1.52 Rev: src/gc.c:1.254 Rev: src/gc.h:1.113 Rev: src/main.c:1.203 Rev: src/mapping.h:1.56 Rev: src/multiset.h:1.36 Rev: src/object.h:1.86 Rev: src/pike_memory.c:1.152 Rev: src/program.h:1.204 Rev: src/stralloc.c:1.166 Rev: src/stralloc.h:1.82