libtool 1.5 case-sensitivity bug in ltdl

[David Kulp]

Given a file:

libFoo.la

and I use ltdl to call

lt_dlopenext("libfoo")

then I will get a valid lt_handle to libFoo.la, but the module *name* 
will remain "libfoo".

Module symbol lookups using lt_dlsym() will fail because lt_dlsym will 
try to match foo_LTX_sym instead of Foo_LTX_sym.

In short, either lt_dlopen should be case sensitive or the module name 
should be set according to the filename.

I'm using libtool 1.5 on darwin.

Hope this is useful.

-d