test suite: lib-orig-include-exclude Strip block count out of find -ls

test suite: lib-orig-include-exclude Strip block count out of find -ls

This is unstable!  I have just seen it vary spontaneously in the
middle of a test run, resulting in this:

 ++ diff -u ../before ../after
 --- ../before   2017-01-08 21:39:48.176033763 +0000
 +++ ../after    2017-01-08 21:39:48.208033833 +0000
 @@ -1,2 +1,2 @@
 -   208380      4 -rw-rw-r--   9 ian      ian           236 Nov  6 20:49 /home/ian/things/Dgit/2dgit/tests/tmp/orig-include-exclude-chkquery/mirror/pool/main/example_1.0.orig-docs.tar.gz
 -   208381      4 -rw-rw-r--   8 ian      ian           373 Nov  6 20:49 /home/ian/things/Dgit/2dgit/tests/tmp/orig-include-exclude-chkquery/mirror/pool/main/example_1.0.orig.tar.gz
 +   208380      4 -rw-rw-r--  10 ian      ian           236 Nov  6 20:49 /home/ian/things/Dgit/2dgit/tests/tmp/orig-include-exclude-chkquery/mirror/pool/main/example_1.0.orig-docs.tar.gz
 +   208381      4 -rw-rw-r--   9 ian      ian           373 Nov  6 20:49 /home/ian/things/Dgit/2dgit/tests/tmp/orig-include-exclude-chkquery/mirror/pool/main/example_1.0.orig.tar.gz
 + test 1 = 0
 + t-report-failure

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>