which were generated with gcc -MM to the end of each Makefile.in
so that make understands which files depend on which. Basically,
everything depends on bochs.h, which depends on everything, which
is not ideal.
compile warnings with or without it on Linux, so it seems no longer
necessary. It may have been introduced to cope with the fabs symbol
conflict, which was already removed in rev1.3 of fpu_etc.c.
