Seems the git server at code.stanziq.com is not running or otherwise not accessible:
Cloning into expat...
code.stanziq.com[0: 72.14.181.62]: errno=Connection refused
fatal: unable to connect a socket (Connection refused)
Clone of 'git://code.stanziq.com/expat.git' into submodule path 'expat' failed
Seems the git server at code.stanziq.com is not running or otherwise not accessible: