gcc-2.95pre rs6000-ibm-aix fix-header bug still present

[David Edelsohn]

	Sigh.  Bootstrapping with gcc-1.1 does not produce the extraneous
definitions of EXIT_SUCCESS and EXIT_FAILURE.  Bootstrapping with IBM's
XLC does.  fixincl successfully built and was used in both instances.

	Does this new fixincludes procedure use "$(CC) -E" to run a
preprocessor and get different programs?  I do not understand what
difference the the build process could account for the different fixincl
results.  I sincerely doubt that something is being miscomplied.

David