tests: conditionalize test-tools.t for Windows support

I still get the following diff on Windows 7 with NTFS.  I'm not sure if it is
expected and we should wildcard the link count, or if something needs to be
fixed.

  @@ -58,7 +58,7 @@

     $ ln bar baz
     $ f bar -n baz -l --hexdump -t --sha1 --lines=9 -B 20
  -  bar: file, links=2, newer than baz, sha1=612ca68d0305c821750a
  +  bar: file, links=0, newer than baz, sha1=612ca68d0305c821750a\r (esc)
     0000: 31 0a 32 0a 33 0a 34 0a 35 0a 36 0a 37 0a 38 0a |1.2.3.4.5.6.7.8.|
     0010: 39 0a                                           |9.|

tests/test-tools.t

@@ -38,10 +38,13 b' Tests of the file helper tool'
   $ f foo
   foo:
 
+#if symlink
   $ f foo --mode
   foo: mode=644
+#endif
 
   $ seq 10 > bar
+#if unix-permissions symlink
   $ chmod +x bar
   $ f bar --newer foo --mode --type --size --dump --links --bytes 7
   bar: file, size=21, mode=755, links=1, newer than foo
@@ -51,6 +54,7 b' Tests of the file helper tool'
   3
   4
   <<< no trailing newline
+#endif
 
   $ ln bar baz
   $ f bar -n baz -l --hexdump -t --sha1 --lines=9 -B 20
@@ -58,6 +62,7 b' Tests of the file helper tool'
   0000: 31 0a 32 0a 33 0a 34 0a 35 0a 36 0a 37 0a 38 0a |1.2.3.4.5.6.7.8.|
   0010: 39 0a                                           |9.|
 
+#if unix-permissions symlink
   $ ln -s yadda l
   $ f . --recurse -MStmsB4
   .: directory with 4 files, size=120, mode=755
@@ -65,6 +70,7 b' Tests of the file helper tool'
   ./baz: file, size=21, mode=755, md5=3b03, sha1=612c
   ./foo: file, size=4, mode=644, md5=d3b0, sha1=f1d2
   ./l: link, size=5, mode=777, md5=2faa, sha1=af93
+#endif
 
   $ f --quiet bar -DL 3
   1
@@ -73,6 +79,8 b' Tests of the file helper tool'
 
   $ cd ..
 
+Yadda is a symlink
+#if symlink
   $ f -qr dir -HB 17
   dir: directory with 4 files
   dir/bar:
@@ -85,3 +93,16 b' Tests of the file helper tool'
   0000: 66 6f 6f 0a                                     |foo.|
   dir/l:
   0000: 79 61 64 64 61                                  |yadda|
+#else
+  $ f -qr dir -HB 17
+  dir: directory with 3 files
+  dir/bar: (glob)
+  0000: 31 0a 32 0a 33 0a 34 0a 35 0a 36 0a 37 0a 38 0a |1.2.3.4.5.6.7.8.|
+  0010: 39                                              |9|
+  dir/baz: (glob)
+  0000: 31 0a 32 0a 33 0a 34 0a 35 0a 36 0a 37 0a 38 0a |1.2.3.4.5.6.7.8.|
+  0010: 39                                              |9|
+  dir/foo: (glob)
+  0000: 66 6f 6f 0a                                     |foo.|
+#endif
+