scm: mercurial: split latest_changesets tag test with limit or not (#14361)

git-svn-id: http://svn.redmine.org/redmine/trunk@12762 e93f8b46-1217-0410-a6f0-8f06a7374b81
scm: mercurial: add latest_changesets "default" branch test (#14361)

git-svn-id: http://svn.redmine.org/redmine/trunk@12763 e93f8b46-1217-0410-a6f0-8f06a7374b81