spurious output for dependency checking

[Paul Martinolich]

Using the CVS version of automake, I am getting spurious output from
the dependency checking /usr/local/share/aclocal/depend.m4 line 50.

Normally, I am getting this:

checking dependency style of cc... conftest.o: conftest.c
conftest.o: conftest.h
sgi

But, if I redirect the stdout and stderr to /dev/null, I don't get
the spurious output.

checking dependency style of /bin/cc... sgi

The line is:

       $SHELL $am_depcomp $depcc -c conftest.c -o conftest.o 2>/dev/null &&

(which I manually changed in the configure file to)

       $SHELL $am_depcomp $depcc -c conftest.c -o conftest.o >/dev/null 2>&1 &&

Either way works on my linux or sgi box using gcc.  But only the second is
silent for the SGI cc compiler.

Paul