SeaMonkey 2.42.9

I've rebuilt SeaMonkey, now 2.42.9. Frank-Rainer Grahl supplied a bunch 
of backported patches from upstream to bring 2.42 up to release 
standards. Some icons fixed thanks to Andreas Kohl. I fixed the merge, a 
couple of files didn't originally merge correctly. The Mozilla tree is 
now slightly ahead of Firefox 45.5, now at the 45.9 level with H264, AAC 
and now MP3 playback working (volume still broken). Seamonky.exe is also 
patched to not need LIBPATHSTRICT or RUN! anymore. 
https://bitbucket.org/dryeo/dry-comm-esr31/downloads/seamonkey-2.42.9esr.en-US.os2.zip. 

Same requirements as previously, the latest FFmpeg 3.3.1 (Hobbes 
incoming currently) should also work for H264, AAC and MP3.
Dave