The binutils build notices that makeinfo is missing, but fails anyway, breaking
the build.  Make it stop.

The "info" file format is obsolete (similar to "gopher"), was never used
by anyone but the FSF, and failed to even replace man pages (which are
now available in HTML).

--- binutils-2.18/missing	2005-07-13 20:24:56.000000000 -0500
+++ binutils-2.18/missing	2008-08-11 02:05:47.000000000 -0500
@@ -299,7 +299,7 @@
     fi
     # If the file does not exist, the user really needs makeinfo;
     # let's fail without touching anything.
-    test -f $file || exit 1
+    test -f $file || exit 0
     touch $file
     ;;