tests/test-eol-update.out

verify: fix "missing revlog!" errors for revlog format v0 and add test

With revlog format v0 the .d files are empty if the only revision stored is an
empty file. Since Mercurial can no longer create format v0 repositories, but
still use it, add a script which creates a repository with a single empty file.
This can be used in other tests if wanted.

# ==== setup repository ====
% hg init
adding .hgeol
adding a.txt

% hg clone repo repo-LF
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
% printrepr.py a.txt (before)
first\r
second\r
third\r
% printrepr.py a.txt (after)
first
third
% hg diff
diff --git a/a.txt b/a.txt
--- a/a.txt
+++ b/a.txt
@@ -1,3 +1,2 @@
 first\r
-second\r
 third\r
% hg update 0
merging a.txt
1 files updated, 1 files merged, 0 files removed, 0 files unresolved
% printrepr.py a.txt
first\r
third\r
% hg diff
diff --git a/a.txt b/a.txt
--- a/a.txt
+++ b/a.txt
@@ -1,3 +1,2 @@
 first
-second
 third

% hg clone repo repo-CRLF
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
% printrepr.py a.txt (before)
first\r
second\r
third\r
% printrepr.py a.txt (after)
first\r
third\r
% hg diff
diff --git a/a.txt b/a.txt
--- a/a.txt
+++ b/a.txt
@@ -1,3 +1,2 @@
 first\r
-second\r
 third\r
% hg update 0
merging a.txt
1 files updated, 1 files merged, 0 files removed, 0 files unresolved
% printrepr.py a.txt
first\r
third\r
% hg diff
diff --git a/a.txt b/a.txt
--- a/a.txt
+++ b/a.txt
@@ -1,3 +1,2 @@
 first
-second
 third