Add permissions handling test

tests/test-permissions

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+hg init
+echo foo > a
+hg add a
+hg commit -m "1" -d "0 0"
+hg verify
+chmod -r .hg/data/a.d
+hg verify 2>/dev/null || echo verify failed
+chmod +r .hg/data/a.d
+hg verify 2>/dev/null || echo verify failed
+chmod -w .hg/data/a.d
+echo barber > a
+hg commit -m "2" -d "0 0" 2>/dev/null || echo commit failed
+

tests/test-permissions.out

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+checking changesets
+checking manifests
+crosschecking files in changesets and manifests
+checking files
+1 files, 1 changesets, 1 total revisions
+checking changesets
+checking manifests
+crosschecking files in changesets and manifests
+checking files
+verify failed
+checking changesets
+checking manifests
+crosschecking files in changesets and manifests
+checking files
+1 files, 1 changesets, 1 total revisions
+commit failed