tests/test-pull-http.out

color: add --color switch

--color works like GNU grep --color. --color=auto only colorizes output
for non-dumb terminals that are TTYs.

adding a
updating working directory
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
% expect error, cloning not allowed
abort: error: 
requesting all changes
% serve errors
% expect error, pulling not allowed
abort: error: 
pulling from http://localhost/
searching for changes
% serve errors