Address of git repositories of some nethack4 developers.

 * ais523's: git://gitorious.org/nitrohack/ais523.git
 * scshunt's: git://gitorious.org/nitrohack/scshunt.git
 * dtsund's: https://github.com/dtsund/nethack4.git
 * jonadab's: git://gitorious.org/nitrohack/jonadab-nh4
 * esr's: git://gitorious.org/nitrohack/esr-nethack4