testdata/, in anticipation of having other test data.

R=dsymonds
CC=bsiegert, golang-dev
https://codereview.appspot.com/14361044

	This is a manual hg commit of codereview change 982044
	http://codereview.appspot.com/982044

	The codereview submission did not work, possibly because some of the
	files were too large.