patchbomb: use ui.promptchoice for diffstat to allow localization of choices
The extra check for ui.interacive from patchbomb's prompt function is not
needed here.
Format boolean prompt as in filemerge.py.
basic test for hg debugrebuildstate
$ hg init repo
$ cd repo
$ touch foo bar
$ hg ci -Am 'add foo bar'
adding bar
adding foo
$ touch baz
$ hg add baz
$ hg rm bar
$ hg debugrebuildstate
state dump after
$ hg debugstate --nodates | sort
n 666 -1 bar
n 666 -1 foo
status
$ hg st -A
! bar
? baz
C foo