tests: update the exit status codes for Windows specific tests

This corresponds to 527ce85c2e60, ebee234d952a, and 568c05d8f3d2.

Differential Revision: https://phab.mercurial-scm.org/D9538

tests/test-casecollision-merge.t

@@ -332,7 +332,7 b' test for rename awareness of case-foldin'
 
   $ hg update --check
   abort: uncommitted changes
-  [255]
+  [20]
 
   $ hg update --clean
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved

tests/test-clone.t

@@ -625,7 +625,7 b' No remote source'
 #if windows
   $ hg clone http://$LOCALIP:3121/a b
   abort: error: * (glob)
-  [255]
+  [100]
 #else
   $ hg clone http://$LOCALIP:3121/a b
   abort: error: *refused* (glob)

tests/test-split.t

@@ -787,7 +787,7 b' TODO: Fix this on Windows. See issue 202'
 
   $ printf 'y\ny\ny\n' | hg split
   abort: cannot split an empty revision
-  [255]
+  [10]
 #endif
 
 Test that splitting moves works properly (issue5723)