test-largefiles.t: fix find quirk on OSX
For some reason, find utility seems to preserve the trailing slash and
append a new one on OSX:
$ find somedir/
somedir/
somedir//somefile
--- a/tests/test-largefiles.t Thu Sep 27 15:50:14 2012 -0500
+++ b/tests/test-largefiles.t Sat Sep 29 13:33:55 2012 +0200
@@ -1614,8 +1614,8 @@
A large.dat
A large2.dat
A normal
- $ find .hglf/ | sort
- .hglf/
+ $ find .hglf | sort
+ .hglf
.hglf/large.dat
.hglf/large2.dat