2.5-stable branch added

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12885 e93f8b46-1217-0410-a6f0-8f06a7374b81
Set version to 2.5.0.stable.

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12887 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12888 to r12890.

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12891 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12892.

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12893 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12894 (#16091).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12895 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12897.

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12898 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12906 from trunk to 2.5-stable

update Rails to 3.2.17

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12907 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12899 (#16077).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12919 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12910 and r12911 (#16091).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12920 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12912 and r12913 from trunk.

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12921 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12914 (#16134).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12922 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12915 to 12918 (#16107).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12923 e93f8b46-1217-0410-a6f0-8f06a7374b81
prevent issue tree hierarchy is broken in race conditions (#6579)

awesome_nested_set 2.1.6 uses lock.
Issue model uses as same way.

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12925 e93f8b46-1217-0410-a6f0-8f06a7374b81
revert r12925 of 2.5-stable

I mistook to commit in stable branch.

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12926 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12929 from trunk to 2.5-stable (#16177)

scm: mercurial: add one "closed" branch to test repository.

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12931 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12930 from trunk to 2.5-stable (#16177)

Mercurial 2.9 compatibility.

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12932 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12935 from trunk to 2.5-stable (#16177)

use Python getattr instead of hasattr.

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12936 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12938 (#16169).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12939 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12941 (#16161).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12942 e93f8b46-1217-0410-a6f0-8f06a7374b81
Merged r12896 (#16081).

git-svn-id: http://svn.redmine.org/redmine/branches/2.5-stable@12945 e93f8b46-1217-0410-a6f0-8f06a7374b81