Linking very large application with GCC trunk on powerpc-linux leads to relocation error of crtbegin/end.o

[David Edelsohn]

>>>>> Andreas Jaeger writes:

Andreas> I'm not a build machinery expert - if anybody has a patch, I'll happily test it,
Andreas> I'm building on Linux/Powerpc64.

Andreas> Adding the above line to rs6000/x-linux64 did not help me.  Btw.
Andreas> we would need it for other files - like gnat1 - as well,

	Andreas Schwab removed x-linux64 yesterday because it was not
referenced by any configuration.

	I know that the tmake_files are the wrong place, but just to test
that it works, try adding the line to t-linux64, which is included in the
powerpc64-linux configuration.

	Once we confirm the command is appended to LDFLAGS for executables
that need it, we can figure out the correct Makefile fragment.

David