[PATCH] Don't use entries for checking status in svn_wc_status3_t. Was: Re: [WIP] Some quirky parts of libsvn_wc/status.c:assemble_status() for retrieving revisions

Hi!

[[[
As part of WC-NG, replace entry calls for revisions from
svn_wc_status2_t related code.

The entries code set the revision of newly added nodes to 0 but the db
sets them to -1. Since too many tests needs to be changed and 'svn info'
also uses 0, I'll change those values in a follow-up patch instead.

* subversion/tests/cmdline/copy_tests.py
  (repos_to_wc): Change revision to 0 since the node is added. Don't
    check against entries since the behavior differs.

* subversion/tests/cmdline/stat_tests.py
  (status_with_tree_conflicts): An copied node should not have a
    changed_rev or author.

* subversion/tests/cmdline/svntest/actions.py
  (run_and_verify_status): Add new parameter check_entries. We only
    check the entries if check_entries is set to True.

* subversion/tests/cmdline/merge_tests.py
  (merge_into_missing): Add revision to status output for missing dir.
    Previously, missing dirs did not have a revision, only files had.
    Don't check entries since the behavior differs.

* subversion/svn/status.c
  (print_status): Replace checks for revisions using entries with the
    direct fields in svn_wc_status3_t. Set the revision for added and
    replaced nodes to 0. WC-NG sets those revisions to -1, but changing
    all the involved tests is for a follow-up.

* subversion/include/svn_wc.h
  (svn_wc_status2_t): Add fields revision, changed_rev and
    changed_author.

* subversion/libsvn_wc/status.c
  (assemble_status): Fill in the new fields with data from the wc db.
  (svn_wc_dup_status3): Copy the changed_author field.
]]]

Quirks
========

Checking entries
-------------------
I need to tweak the status output when doing a compare against the
entries in run_and_verify_status(). The code changes the behaviour for
revisions in three ways:

i) Missing dirs, now have a revision
ii) Copies from foreign repos to wc has the rev set to -1
iii) A copied node should not have a changed_author or changed_rev set.

I could change tweak_for_entries_compare() to fix i) but for the
other two I would have to write a func for tweaking the status returned
by 'entries-dump'. Can't I just use the check_entries parameter I've
added to run_and_verify_status() instead? I would only disable the
entries check for three tests.

Getting revisions of deleted nodes
-----------------------------------
I'm using base_get_info() for both nodes having the op_root from a plain
delete and those from a delete within an add. In the later case, the
revision, changed_rev and changed_author will be set to the default nil
values which match what I would get from read_info().

Cheers,
Daniel