- Correct order of %file and %defattr

- Allow debuginfo

- Update to (lib)fcall-2.1 release
* Added support for the following platforms:
(Previously, a build on these platforms failed.)
- x86_64: Solaris 11.3.
- OpenBSD 6.1.
- HardenedBSD 10 and 11.
* Fixed a bug regarding passing of pointers on the following platforms:
- x86_64: Linux with x32 ABI: CC="gcc -mx32".
* Fixed a crash in trampoline on the following platforms:
- Update the patch ffcall-trampoline.patch even if not applied

- Update to (lib)fcall-2.0 release
* The package now installs a library libffcall.{a,so}. It contains the
'avcall' and 'callback' packages. The libraries libavcall.{a,so} and
libcallback.{a,so} are still installed as well, but are deprecated.
* The installed libraries are now installed as shared libraries by default
(except for libvacall, which is still a static library only).
* The installed shared libraries are now properly versioned. This means that
when installing with --enable-shared, upgrading to a newer version of
libffcall will not break existing binaries.
* The installed include files are now platform independent. This means that
you can now install libffcall for different ABIs on the same system, using
the same --prefix option but different --exec-prefix options for each ABI.
* API changes in :
- The second argument of alloc_trampoline() is now a 'void**', rather
than a 'void*'.