Fix bundle repos to use an index tuple consistent with revlogng
The bundle repo code was adding a field to the index tuple, which
confused the revlogng changes. This creates a new dict instead
to maintain the extra bundle info.
#!/bin/sh
hg init a
cd a
echo a > foo
hg add foo
hg commit -m 1 -d "1000000 0"
rm foo
hg remove foo
hg commit -m 2 -d "1000000 0"
hg export 0
hg export 1
hg log -p -r 0
hg log -p -r 1
cd ..
hg clone a b