[PATCH STABLE] test: make test-extdiff resilient to */gnubin/echo

[Sean Farley]

# HG changeset patch
# User Sean Farley <sean.michael.farley at gmail.com>
# Date 1424974984 28800
#      Thu Feb 26 10:23:04 2015 -0800
# Branch stable
# Node ID 42ee11d8691ff972ef185b7a8d75a0eb9d691c75
# Parent  d65ecb814fc0092cfa30a1eb09eed6f97a2510b2
test: make test-extdiff resilient to */gnubin/echo

My Mac test machine has 'echo' in '/opt/local/libexec/gnubin/echo' since, well,
GNU is not BSD.

Also, I feel it need to be said about using regexes:

Some people, when confronted with a problem, think "I know, I'll use regular
expressions." Now they have two problems.

diff --git a/tests/test-extdiff.t b/tests/test-extdiff.t
--- a/tests/test-extdiff.t
+++ b/tests/test-extdiff.t
@@ -177,11 +177,11 @@ Test pre-72a89cf86fcd backward compatibi
   > EOF
 #if windows
 TODO
 #else
   $ hg --debug odd | grep '^running'
-  running "*/bin/echo --foo='sp ace' 'sp ace' --bar='sp ace' 'sp ace'" in * (glob)
+  running "*/*bin/echo --foo='sp ace' 'sp ace' --bar='sp ace' 'sp ace'" in * (glob)
 #endif
 
 Empty argument must be quoted
 
   $ cat <<EOF >> $HGRCPATH