* lib/binary-io.h (set_binary_mode): New function.
(SET_BINARY): Define in terms of set_binary_mode.
* modules/binary-io (configure.ac): Require AC_C_INLINE.
* tests/test-binary-io.c (main): Accept an argument, and test either
set_binary_mode or SET_BINARY depending on the argument.
* tests/test-binary-io.sh: Invoke test-binary-io twice, with an
argument. Clean up also t-bin-out0.tmp.
* tests/test-binary-io.c (main): Don't remove t-bin-out2.tmp here.
Don't verify the size of t-bin-out1.tmp here.
* tests/test-binary-io.sh: Verify it here.
Reported by Simon Josefsson.