gen-scmconfig is broken

[Bruce Korb]

I've installed libtool in many places to ensure that it should find it.
(My private directory fails "configure", so I used /usr/local for --prefix.
This should *NOT* be necessary.):

Version 1.8.7 on CentOS release 5.5 (Final)

$ ./configure --prefix=/net/home/bkorb
[[..........]]
$ make
[[..........]]
cat ./scmconfig.h.top > scmconfig.h.tmp
./gen-scmconfig >> scmconfig.h.tmp
./gen-scmconfig: error while loading shared libraries: libltdl.so.7:
cannot open shared object file: No such file or directory
make[2]: *** [scmconfig.h] Error 127
make[2]: Leaving directory `/usr/local/src/guile/guile-1.8.7/libguile'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/usr/local/src/guile/guile-1.8.7'
make: *** [all] Error 2
$ which -a libtool
/usr/local/src/guile/guile-1.8.7/libtool
/net/home/bkorb/bin/libtool
/usr/local/bin/libtool
/usr/bin/libtool
$ for f in $(which -a libtool);do $f --version |head -1 ; done
ltmain.sh (GNU libtool) 2.2.6
libtool (GNU libtool) 2.2.10
libtool (GNU libtool) 2.2.10
ltmain.sh (GNU libtool) 1.5.22 (1.1220.2.365 2005/12/18 22:14:06)