release.py: Use git-archive to create the tarballs and tag clean checkout
release.py: Use git-archive to create the tarballs and tag clean checkout

Signed-off-by: James Vega <91ae71a1168cea0b65ac9975da69d5a7753116be@users.sourceforge.net>

ProgVal/Limnoria-test,raboof/supybot,kblin/supybot-gsoc,mazaclub/mazabot-core,jeffmahoney/supybot,prashantpawar/supybot-rothbot,Ban3/Limnoria,buildbot/supybot,Ban3/Limnoria,haxwithaxe/supybot,mazaclub/mazabot-core,frumiousbandersnatch/supybot-code,ProgVal/Limnoria-test