Log Message:
seamonkey: update to 2.49.4
Note this update is based off an EOL firefox (ESR52). Use with caution.

What's New in SeaMonkey 2.49.4
SeaMonkey 2.49.4 uses the same backend as Firefox and contains the relevant \ 
Firefox 52.9.0 ESR security fixes.
SeaMonkey 2.49.4 shares most parts of the mail and news code with Thunderbird. \ 
Please read the Thunderbird 52.9.1 release notes for specific changes and \ 
security fixes in this release.

SeaMonkey-specific changes
    Among the general platform and mail fixes this release contains backported \ 
fixes from Thunderbird for the EFAIL security vulnerability.
    SeaMonkey now uses gtk3 on Linux. If you experience a problem because of \ 
this please file a bug and link it to Switch Linux builds to GTK3 with SeaMonkey \ 
2.49. Pleae try another OS theme first. Some of them are buggy and cause \ 
problems with SeaMonkey, Thunderbird and Firefox.