[Bug 1251006] wings-v1.5.4 is available

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=1251006

--- Comment #1 from Upstream Release Monitoring  ---
Failed to kick off scratch build.

cmd:  spectool -g /var/tmp/thn-vneLsb/wings.spec
return code:  22
stdout:
Getting https://github.com/dgud/wings/archive/vv1.5.4/wings-v1.5.4.tar.gz to
./wings-v1.5.4.tar.gz
Getting http://prdownloads.sourceforge.net/wings/wings3d_manual1.6.1.pdf to
./wings3d_manual1.6.1.pdf

stderr:
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed

0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
100   132    0   132    0     0    259      0 --:--:-- --:--:-- --:--:--   259

0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
curl: (22) The requested URL returned error: 404 Not Found
./wings3d_manual1.6.1.pdf already exists, skipping download