clamav has security update

Hi,

Clamav has had a security update to 0.97.5

The reason for this versions tarball being smaller seems to be that the virus db files are not included any more which seems reasonable. I 
have thus updated the version in the spec and removed these 2 lines:
#%attr(0644,clamav,clamav) %verify(not mtime size md5) /var/lib/clamav/main.cvd
#%attr(0644,clamav,clamav) %verify(not mtime size md5) /var/lib/clamav/daily.cvd

Hope you will find time for building soon.

Regards,
Kim