hgweb: use a single-element tuple to return from protocol.unbundle()
Python 2.3/2.4 don't support yielding from inside try/finally blocks.
#!/bin/sh
mkdir t
cd t
hg init
echo a > a
hg add a
hg commit -m "test" -d "1000000 0"
hg verify
hg parents
hg status
hg rollback
hg verify
hg parents
hg status
echo % Test issue 902
hg commit -m "test"
hg branch test
hg rollback
hg branch
echo % Test rollback of hg before issue 902 was fixed
hg commit -m "test"
hg branch test
rm .hg/undo.branch
hg rollback
hg branch