haskell: bump ekg to 0.4, add ekg-core
Merge pull request #2483 from proger/haskell-ekg-0.4

haskell: bump ekg to 0.4, add ekg-core
fcgiwrap: new package

Simple server for running CGI applications over FastCGI

https://nginx.localdomain.pl/wiki/FcgiWrap