Merged r12447 for 2.4.2 release.

git-svn-id: http://svn.redmine.org/redmine/branches/2.4-stable@12448 e93f8b46-1217-0410-a6f0-8f06a7374b81
backport r12453 AbstractAdapter change to 2.4-stable (#15756)

git-svn-id: http://svn.redmine.org/redmine/branches/2.4-stable@12454 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12456 from trunk to 2.4-stable (#15756)

change requirement in bazaar lib as same with other scm libs.

git-svn-id: http://svn.redmine.org/redmine/branches/2.4-stable@12458 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12695 from trunk to 2.4-stable (#15960)

pt-BR translation for 2.4-stable updated by Leandro Gehlen.

git-svn-id: http://svn.redmine.org/redmine/branches/2.4-stable@12697 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12660 (#13544).

git-svn-id: http://svn.redmine.org/redmine/branches/2.4-stable@12845 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12652 (#15664).

git-svn-id: http://svn.redmine.org/redmine/branches/2.4-stable@12846 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12745 (#15870).

git-svn-id: http://svn.redmine.org/redmine/branches/2.4-stable@12847 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12844 (#16038).

git-svn-id: http://svn.redmine.org/redmine/branches/2.4-stable@12852 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12848 (#16032).

git-svn-id: http://svn.redmine.org/redmine/branches/2.4-stable@12853 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12736 (#15977).

git-svn-id: http://svn.redmine.org/redmine/branches/2.4-stable@12860 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12861, updates for 2.4.3 release.

git-svn-id: http://svn.redmine.org/redmine/branches/2.4-stable@12862 e93f8b46-1217-0410-a6f0-8f06a7374b81
merge 2.4-stable