wildcard %doc flagging - anything under _pkgdocdir
This changes only purely metadata-related information, specifically
what rpm --docfiles prints. The actual documentation files are already
included in the RPM by %dir.
Testing on RHEL6 with both rpm -ql and rpm -qd, no change could be
observed in the final generated RPM, so this change should have no
impact on anything working with the final RPM itself.
Signed-off-by: Jiri Jaburek <jjaburek@redhat.com>