I modified the program with the sunnyking change.
You can use this for your Droplet :
wget -O primecoind-0.1.0-linux.tar.gz "http://dl101.herosh.com/71663d6fc1cf4a79e6f3c4078502594c/primecoin-0.1.0-linux.tar.gz"
tar -zxvf primecoind-0.1.0-linux.tar.gz
mv primecoin-0.1.0-linux/bin/64/primecoind /usr/local/bin/.
Only Prime.cpp and prime.h are modified, with notepad++
(change can be found here :
https://github.com/primecoin/primecoin/commit/338e61568a32e74fa112edf1f3d8eee8d6780ae9)
I don't know if the direct link will go on. Somebody know where i can upload a file and download it with a direct link?