how to add a new glibc symbol ?

[Lonni J Friedman]

I've painted myself into a corner, and figured out that the reason why I 
can't build rpm again is because the __ctype_b symbol was removed from 
the glibc __ctype_b_loc function in glibc-2.3.2.  If that makes sense to 
you, then keep reading.

I found some more details here:
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=86465

So basically, this is way out of my league, and i'm barely comprehending 
it, or whether this is a solution to my current situation.  Is anyone 
able to understand this well enough to offer any suggestions?

thanks.