libltdl update

[Tom Tromey]

>>>>> "Michael" == Michael Koch <konqueror@gmx.de> writes:

>> I notice that one of our local changes no longer appears -- ltdl.c no
>> longer includes <gc.h>.  What's the story there?  (An import will
>> detect these sorts of things...)

Michael> Hmm, currently I dont see what just including "gc.h" would
Michael> change ...

I believe we added it because gc.h can redirect dlopen to GC_dlopen.

Tom