Fix 'can't create ./src/***: No such file' errors on linking

Fix 'can't create ./src/***: No such file' errors on linking

Side effect of the AIX port fixes using .o instead of duplicating and
re-building the .cc individually. "It seemed a good idea at the time"(tm).
It is a bit strange that it should only show up now, those changes were
made long ago.

Anyways, I've come to the conclusion from other places that the rebuild is
slower to compile but a lot safer to deal with linkage and dependencies.