tests: compatibility fix.

'touch -d *' doesn't work on Mac OS X. In order to prevent this from
occuring again, a check for the case is added to 'check-code.py'.

contrib/check-code.py

@@ -63,6 +63,7 b' testpats = ['
     (r'export.*=', "don't export and assign at once"),
     ('^([^"\']|("[^"]*")|(\'[^\']*\'))*\\^', "^ must be quoted"),
     (r'^source\b', "don't use 'source', use '.'"),
+    (r'touch -d', "don't use 'touch -d', use 'touch -t' instead"),
 ]
 
 testfilters = [

tests/test-archive.t

@@ -221,7 +221,7 b' empty repo'
   [255]
 old file -- date clamped to 1980
 
-  $ touch -d 1975-01-01 old
+  $ touch -t 19750101 old
   $ hg add old
   $ hg commit -m old
   $ hg archive ../old.zip