fix bug in setup.py introduced in r1508.
The 'console' argument is expected to be a list of strings,
but was changed to just a string.
%% no merges expected
%% merge of b expected
merging for b
merging b
%%
Contents of b should be "this is file b1"
This is file b1
%% merge expected!
merging for b
merging b
%% merge of b expected
merging for b
merging b