scm: split Repository#entries (#14361)

git-svn-id: http://svn.redmine.org/redmine/trunk@12754 e93f8b46-1217-0410-a6f0-8f06a7374b81
scm: mercurial: add method to switch short or long id by existing value in DB (#14361)

git-svn-id: http://svn.redmine.org/redmine/trunk@12755 e93f8b46-1217-0410-a6f0-8f06a7374b81