websocket: avoid $GOROOT in case it has spaces
websocket: avoid $GOROOT in case it has spaces

Fixes issue 115.

R=r, ukai, sergio
http://codereview.appspot.com/162057
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go