Harden_all_packages_with_position-independent_code + guile modules

[Nikos Mavrogiannopoulos]

In rawhide building the gnutls guile bindings fails, and that's related
to the new hardening flags being enabled with [0]. The failure is quite
peculiar since the loading of a dynamic module fails [1] which already
is position independent. Could someone explain what do the new flags in
rawhide do (and possibly add this description in [0]). Using the same
hardened flags in F21 has no negative effect in building the module.

regards,
Nikos

[0].
https://fedoraproject.org/wiki/Changes/Harden_all_packages_with_position-independent_code
[1]. https://bugzilla.redhat.com/show_bug.cgi?id=1196556