[CentOS-devel] Missing upstream EL5 SRPMS

I'm trying to build a patched version of the firefox-31.1.0-6.el5.src.rpm
package for EL5, and am getting the following missing deps:

DEBUG util.py:283:  Error: No Package found for hunspell-devel
DEBUG util.py:283:  Error: No Package found for libvpx-devel >= 1.3.0
DEBUG util.py:283:  Error: No Package found for system-bookmarks

And indeed I cannot find any of those packages at
http://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/ (or
5client).  I realize this is more of an upstream issue, but was hoping
somebody here would have some insight from trying to build that for CentOS.

-- 
Orion Poplawski
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NWRA, Boulder/CoRA Office             FAX: 303-415-9702
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