help/config: note 64-bit Windows registry key used with 32-bit Python
Before this patch the only place that documented the use of a different
registry key was on the wiki page for installing on Windows from
sources, while most users will use a pre-packaged installer and the
supplied help files.
This patch documents in the supplied help files that an alternate
registry key is used for the installation/system configuration file when
using 32-bit Python on a 64-bit Windows.
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 644 -1 bar
n 644 -1 foo
status
$ hg st -A
! bar
? baz
C foo
$ cd ..