tests: stabilize the recent checkexec changes on Windows

This goes with bd0874977a5e.

tests/test-fncache.t

@@ -88,9 +88,9 b' Non store repo:'
   .hg/00manifest.i
   .hg/cache
   .hg/cache/branch2-served
-  .hg/cache/checkisexec
-  .hg/cache/checklink
-  .hg/cache/checklink-target
+  .hg/cache/checkisexec (execbit !)
+  .hg/cache/checklink (symlink !)
+  .hg/cache/checklink-target (symlink !)
   .hg/cache/manifestfulltextcache (reporevlogstore !)
   .hg/cache/rbc-names-v1
   .hg/cache/rbc-revs-v1
@@ -125,9 +125,9 b' Non fncache repo:'
   .hg/00changelog.i
   .hg/cache
   .hg/cache/branch2-served
-  .hg/cache/checkisexec
-  .hg/cache/checklink
-  .hg/cache/checklink-target
+  .hg/cache/checkisexec (execbit !)
+  .hg/cache/checklink (symlink !)
+  .hg/cache/checklink-target (symlink !)
   .hg/cache/manifestfulltextcache (reporevlogstore !)
   .hg/cache/rbc-names-v1
   .hg/cache/rbc-revs-v1

tests/test-share.t

@@ -28,15 +28,16 b" share shouldn't have a full cache dir, o"
   default                        0:d3873e73d99e
   $ hg tags
   tip                                0:d3873e73d99e
-  $ ls -1 .hg/cache
-  checkisexec
-  checklink
-  checklink-target
+  $ ls -1 .hg/cache || true
+  ls: .hg/cache: $ENOENT$ (no-execbit no-symlink !)
+  checkisexec (execbit !)
+  checklink (symlink !)
+  checklink-target (symlink !)
   $ ls -1 ../repo1/.hg/cache
   branch2-served
-  checkisexec
-  checklink
-  checklink-target
+  checkisexec (execbit !)
+  checklink (symlink !)
+  checklink-target (symlink !)
   manifestfulltextcache (reporevlogstore !)
   rbc-names-v1
   rbc-revs-v1