PATCH to split up cpp_read_main_file

[Per Bothner]

Andrew Pinski wrote:

> It was not working before his patch any way.
> It was broken by <http://gcc.gnu.org/ml/gcc-patches/2003-08/msg00081.html>.

Here is a test-case that might be easier (certainly faster)
than bootsrapping with --enable-intermodule.

Just do:
cc1 Csrc1.c Csrc2.c -o Ctest.s
gcc -o Ctest Ctest.s
./Ctest

This should work.  It doesn't with the current head, at least with my
(un-checked-in) patch.  (It is possible the fault is my patch, but I
think Zack's patch is more likely to blame.)

If it doesn't work, running gdb on cc1 should be relatively easy.
-- 
	--Per Bothner
per@bothner.com   http://per.bothner.com/

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