tests: make timezone in diff output glob-ed for portability

Before this patch, some tests using external "diff" command via
extdiff extension fail on Solaris, because system standard "diff" (=
/usr/bin/diff) on Solaris doesn't display timezone for timestamp of
each files in diff output.

This patch makes timezone in external diff output glob-ed for
portability of tests, and adds check-code.py a rule to detect such

contrib/check-code.py

@@ -178,6 +178,8 b' utestpats = ['
      'use test -f to test for file existence'),
     (r'^  diff -[^ -]*p',
      "don't use (external) diff with -p for portability"),
+    (r'^  [-+][-+][-+] .* [-+]0000 \(glob\)',
+     "glob timezone field in diff output for portability"),
   ],
   # warnings
   [

tests/test-add.t

@@ -226,7 +226,7 b' and OS X'
   $ hg diff capsdir1/capsdir
   diff -r * CapsDir1/CapsDir/SubDir/Def.txt (glob)
   --- a/CapsDir1/CapsDir/SubDir/Def.txt	Thu Jan 01 00:00:00 1970 +0000
-  +++ b/CapsDir1/CapsDir/SubDir/Def.txt	* +0000 (glob)
+  +++ b/CapsDir1/CapsDir/SubDir/Def.txt	* (glob)
   @@ -1,1 +1,1 @@
   -xyz
   +def

tests/test-graft.t

@@ -349,8 +349,8 b' Disallow grafting an already grafted cse'
   [255]
 
   $ hg extdiff --config extensions.extdiff= --patch -r 2 -r 13
-  --- */hg-5c095ad7e90f.patch	* +0000 (glob)
-  +++ */hg-7a4785234d87.patch	* +0000 (glob)
+  --- */hg-5c095ad7e90f.patch	* (glob)
+  +++ */hg-7a4785234d87.patch	* (glob)
   @@ -1,18 +1,18 @@
    # HG changeset patch
   -# User test
@@ -380,8 +380,8 b' Disallow grafting an already grafted cse'
   [1]
 
   $ hg extdiff --config extensions.extdiff= --patch -r 2 -r 13 -X .
-  --- */hg-5c095ad7e90f.patch	* +0000 (glob)
-  +++ */hg-7a4785234d87.patch	* +0000 (glob)
+  --- */hg-5c095ad7e90f.patch	* (glob)
+  +++ */hg-7a4785234d87.patch	* (glob)
   @@ -1,8 +1,8 @@
    # HG changeset patch
   -# User test

tests/test-subrepo-deep-nested-change.t

@@ -721,14 +721,14 b' Interaction with extdiff, largefiles and'
 
   $ hg --config extensions.extdiff= extdiff -r '.^' -S
   diff -Nru cloned.*/.hgsub cloned/.hgsub (glob)
-  --- cloned.*/.hgsub	* +0000 (glob)
-  +++ cloned/.hgsub	* +0000 (glob)
+  --- cloned.*/.hgsub	* (glob)
+  +++ cloned/.hgsub	* (glob)
   @@ -1,2 +1 @@
    sub1 = ../sub1
   -sub3 = sub3
   diff -Nru cloned.*/.hgsubstate cloned/.hgsubstate (glob)
-  --- cloned.*/.hgsubstate	* +0000 (glob)
-  +++ cloned/.hgsubstate	* +0000 (glob)
+  --- cloned.*/.hgsubstate	* (glob)
+  +++ cloned/.hgsubstate	* (glob)
   @@ -1,2 +1 @@
    7a36fa02b66e61f27f3d4a822809f159479b8ab2 sub1
   -b1a26de6f2a045a9f079323693614ee322f1ff7e sub3