minor nits with ltdl.m4

[Ralf Wildenhues]

1) In one case, the backward compatibility INCLTDL is not set equal to
LTDLINCL.  OK to apply the following patch?

        * libltdl/m4/ltdl.m4 (LT_WITH_LTDL): Also set INCLTDL.

Index: libltdl/m4/ltdl.m4
===================================================================
RCS file: /cvsroot/libtool/libtool/libltdl/m4/ltdl.m4,v
retrieving revision 1.9
diff -u -r1.9 ltdl.m4
--- libltdl/m4/ltdl.m4  3 Oct 2005 15:45:47 -0000       1.9
+++ libltdl/m4/ltdl.m4  4 Oct 2005 12:40:06 -0000
@@ -181,6 +185,7 @@
     [Define this if a modern libltdl is already installed])
   LIBLTDL=-lltdl
   LTDLINCL=
+  INCLTDL=
 fi
 
 # Report our decision...


2) configure output is just a tad ugly:
| checking for lt_dlinterface_register in ltdl.h... checking for ltdl.h... yes
| checking for lt_dlinterface_register in -lltdl... yes
| yes
| checking whether to use included libltdl... no

because the answer for the first test in the first line is delayed until
the third line, and incorporates knowledge gained in the meantime.
Should we care about looks here? (I assume no unless someone steps in :)

Cheers,
Ralf