It was a bit too clever, and didn't really work as an API,
confusing people to no end. Better implement specific methods
whether an interface is usable/available/ready on the interface
itself, or even add GError arguments, rather than try to have
per-instance interfaces.
Original commit message from CVS:
* tests/check/Makefile.am:
* tests/check/gst/gstabi.c:
* tests/check/gst/struct_sparc.h:
* tests/check/libs/libsabi.c:
* tests/check/libs/struct_sparc.h:
Add Sparc ABI checks
* tests/check/gst/gstvalue.c: (GST_START_TEST):
Cast signed integer to unsigned to avoid a compiler warning.
