fix traceback of extdiff after a merge
- files that comes from a different branch are marked as modified
but aren't present in the original manifest
- add a testcase for extdiff and for regular diff
adding a
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
% expect ssl error
pushing to http://localhost:20059/
searching for changes
ssl required
% expect authorization error
pushing to http://localhost:20059/
searching for changes
push not authorized
% expect authorization error: must have authorized user
pushing to http://localhost:20059/
searching for changes
push not authorized
% expect success
pushing to http://localhost:20059/
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
rolling back last transaction
changegroup: u=remote:http
% expect authorization error: all users denied
pushing to http://localhost:20059/
searching for changes
push not authorized
% expect authorization error: some users denied, users must be authenticated
pushing to http://localhost:20059/
searching for changes
push not authorized