test-tools: fix portability issues

tests/test-tools.t

@@ -1,7 +1,7 b''
 Tests of the file helper tool
 
   $ f -h
-  Usage: f [options] [filenames]
+  ?sage: f [options] [filenames] (glob)
   
   Options:
     -h, --help            show this help message and exit
@@ -65,7 +65,7 b' Tests of the file helper tool'
 #if unix-permissions symlink
   $ ln -s yadda l
   $ f . --recurse -MStmsB4
-  .: directory with 4 files, size=120, mode=755
+  .: directory with 4 files, size=*, mode=755 (glob)
   ./bar: file, size=21, mode=755, md5=3b03, sha1=612c
   ./baz: file, size=21, mode=755, md5=3b03, sha1=612c
   ./foo: file, size=4, mode=644, md5=d3b0, sha1=f1d2