Description of problem:
When using yum on a computer without hunspell that only has access to the rawhide repo (e.g. a rawhide mock build), xulrunner cannot find libhunspell-1.2.so.0().

Version-Release number of selected component (if applicable):
xulrunner-2.0.1-1.fc16.x86_64

How reproducible:
Consistent.

Steps to Reproduce:
1. sudo yum remove hunspell
2. sudo yum --enablerepo=rawhide --disablerepo=fedora install hunspell
3. sudo yum --enablerepo=rawhide install xulrunner
  
Actual results:
--> Running transaction check
---> Package xulrunner.x86_64 0:2.0.1-1.fc16 will be installed
--> Processing Dependency: libhunspell-1.2.so.0()(64bit) for package: xulrunner-2.0.1-1.fc16.x86_64
--> Finished Dependency Resolution
Error: Package: xulrunner-2.0.1-1.fc16.x86_64 (rawhide)
    Requires: libhunspell-1.2.so.0()(64bit) for package: 2.0.1-1.fc16.x86_64
    Availible: hunspell-1.2.15-2.fc15.x86_64 (fedora)
        libhunspell-1.2.so.0()(64bit)
    Installed: hunspell-1.3.2-1.fc16.x86_64 (@rawhide)
        Not found
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest

Expected results:
Successful install of xulrunner

Additional info:
Other dependant repos (e.g. enchant) use libhunspell-1.3.so.0() from the rawhide hunspell. Repo for xmlrunner should use updated version or include compat.