tests/test-mq-qimport-fail-cleanup.out

mq: clarify the fact that qimport is trying to read a file

"hg qimport tip" would throw "abort: unable to read tip" before this.

adding a

#empty series

#qimport valid patch followed by invalid patch
adding b.patch to series file
abort: unable to read file fakepatch

#valid patches before fail added to series
b.patch