[CentOS] A couple of 32-bit packages got no update in 6.3/x86_64

Namely:

* hivex
* hivex-devel
* librdmac
* librdmac-devel
* sanlock-libs
* sanlock-devel

and maybe others.

Is this on purpose (I don't know if upstream has removed or updated the 
32-bit rpms, but the old ones are still in C6.3/x86_64), or is it just 
the usual sloppyness (I've been told here on previous occasions the 
biarch is a pain in the ass to maintain, nobody cares anyway, it's not 
'plain', and no sensible man should be using it).

-Michael