do not overwrite MAKEINFO

[Ralf Wildenhues]

This patch allows `make' to succeed on systems without `makeinfo'.

Cheers,
Ralf

        * doc/Makefile.am: Use `AM_MAKEINFOFLAGS' rather than
        overwriting `MAKEINFO', so that `missing' can do its job.

Index: doc/Makefile.am
===================================================================
RCS file: /sources/coreutils/coreutils/doc/Makefile.am,v
retrieving revision 1.36
diff -u -r1.36 Makefile.am
--- doc/Makefile.am     19 Jun 2005 13:43:50 -0000      1.36
+++ doc/Makefile.am     27 May 2006 15:33:16 -0000
@@ -11,7 +11,7 @@
 # Otherwise, it would also generate files with names like <package>.info-[123],
 # and those names all map to one 14-byte name (<package>.info-) on some crufty
 # old systems.
-MAKEINFO = makeinfo --no-split
+AM_MAKEINFOFLAGS = --no-split
 
 constants.texi: $(top_srcdir)/src/tail.c
        LC_ALL=C \