R_SPARC_RELATIVE vs R_SPARC_UA32 & unaligned unwind tables - again

[DJ Delorie]

> To sparc.h when it works perfectly everywhere but on old Solaris?
> This sound more like it should be in Solaris specific headers...

Well, yeah, whatever.  IMHO any solution for old solaris should be
enabled for all compatible solaris also, so that you can run one
binary on all solaris old and new.

But yeah, we probably don't need it for non-solaris targets.