dirstate: remove the python-side whitelist of allowed matchers
This whitelist is too permissive because it allows matchers that contain
disallowed ones deep inside, for example through `intersectionmatcher`.
It is also too restrictive because it doesn't pass through
some of the matchers we support, such as `patternmatcher`.
It's also unnecessary because unsupported matchers raise
`FallbackError` and we fall back anyway.
Making this change makes more of the tests use rust code path,
and therefore subtly change behavior. For example, rust status
in largefiles repos seems to have strange behavior.
$ cat >> $HGRCPATH <<EOF
> [extensions]
> drawdag=$TESTDIR/drawdag.py
> bruterebase=$TESTDIR/bruterebase.py
> [experimental]
> evolution.createmarkers=True
> evolution.allowunstable=True
> EOF
$ init() {
> N=`expr ${N:-0} + 1`
> cd $TESTTMP && hg init repo$N && cd repo$N
> hg debugdrawdag
> }
Source looks like "N"
$ init <<'EOS'
> C D
> |\|
> A B Z
> EOS
$ hg debugbruterebase 'all()-Z' Z
A: A':Z
B: B':Z
AB: A':Z B':Z
C: ABORT: cannot rebase 3:a35c07e8a2a4 without moving at least one of its parents
AC: A':Z C':A'B
BC: B':Z C':B'A
ABC: A':Z B':Z C':A'B'
D: D':Z
AD: A':Z D':Z
BD: B':Z D':B'
ABD: A':Z B':Z D':B'
CD: ABORT: cannot rebase 3:a35c07e8a2a4 without moving at least one of its parents
ACD: A':Z C':A'B D':Z
BCD: B':Z C':B'A D':B'
ABCD: A':Z B':Z C':A'B' D':B'
Moving backwards
$ init <<'EOS'
> C
> |\
> A B
> |
> Z
> EOS
$ hg debugbruterebase 'all()-Z' Z
B: B':Z
A:
BA: B':Z
C: ABORT: cannot rebase 3:b8d7149b562b without moving at least one of its parents
BC: B':Z C':B'A
AC:
BAC: B':Z C':B'A