The gone but still referenced state of amiconf.h broke 'make depend'.
Fixing that turns it into a comment in the generated dependencies
but that ran into a problem with it being followed by fnamesiz.h
instead of being last in the list containing it. So in addition to
the depend fix, move #include "fnamesiz.h" from config.h to global.h
in order to have it come before amiconf.h.