and sending the appropriate callbacks and use it to remove some duplicated code.

Make the redirect handling in HTTP_HttpSendRequestW iterate instead of recurse.

FT_New_Face always creates a new mapping of the font file, so do the
mapping by hand and use FT_New_Memory_Face instead.

Let dwarf and msc use this new feature.
As we also add global symbol without addresses, don't take those
constant symbols into account for searches by address.

Make use of it to get rid to module_compute_num_syms.