tests/test-excessive-merge

Fix income/pull with bundle and -R (issue 820).

Uses ui.setconfig() to tell bundlerepo where the main repo is. This is
needed for when the --repository option is used.

Adds tests to test-bundle and a new test script
test-mq-pull-from-bundle, which plays out the situation that initially
made me detect this bug

(hg -R .hg/patches pull ../bundle.hg).

#!/bin/sh

hg init

echo foo > a
echo foo > b
hg add a b

hg ci -m "test" -d "1000000 0"

echo blah > a

hg ci -m "branch a" -d "1000000 0"

hg co 0

echo blah > b

hg ci -m "branch b" -d "1000000 0"
HGMERGE=true hg merge 1

hg ci -m "merge b/a -> blah" -d "1000000 0"

hg co 1
HGMERGE=true hg merge 2
hg ci -m "merge a/b -> blah" -d "1000000 0"

hg log
hg debugindex .hg/store/00changelog.i

echo

echo 1
hg manifest --debug 1
echo 2
hg manifest --debug 2
echo 3
hg manifest --debug 3
echo 4
hg manifest --debug 4

echo

hg debugindex .hg/store/data/a.i

hg verify