cgit: new package

cgit is a web frontend for git repositories - it is a CGI program to use
with your favourite webserver. Add the latest version, 0.9.2.
Merge pull request #584 from bjornfor/cgit

cgit: new package
Module::Pluggable: Update to 4.8
mysql-connector-java: Updated to 5.1.25
typos
os-specific/linux/microcode/converter.nix: update download location for intel-microcode2ucode.c