#4036:added ability to set priority to slave DBs
#4036:added ability to set priority to slave DBs


git-svn-id: 6ba286cfaf911c2ea4e466e770bddd1fee7a7b62@12224 8bbc783d-d51a-0410-adab-8fa69d43f207

C-nakajima/OpenPNE3,openpne/OpenPNE3,C-nakajima/OpenPNE3,tejimaya/OpenPNE3,nishizoe/OpenPNE3,openpne/OpenPNE3,isaosano/OpenPNE3,balibali/KakiageSNS,tejima/testravis,ShinichiU/OpenPNE3,ShinichiU/AuthFramework,upsilon/OpenPNE3,upsilon/travis-test,tejimaya/OpenPNE3,nishizoe/OpenPNE3,ShinichiU/OpenPNE3,tejima/OP3PKG,ShinichiU/OpenPNE3,nise-nabe/ppcon-sns,C-nakajima/OpenPNE3,isaosano/OpenPNE3,ShinichiU/AuthFramework,isaosano/OpenPNE3,kashiwasan/symfony-advanced,ShinichiU/OpenPNE3_with_webInstaller,nise-nabe/ppcon-sns,tejima/testravis,kashiwasan/symfony-advanced,ShinichiU/AuthFramework,ShinichiU/OpenPNE3_with_webInstaller,C-nakajima/OpenPNE3,openpne/OpenPNE3,openpne/OpenPNE3,ShinichiU/OpenPNE3,isaosano/OpenPNE3,tejima/OP3PKG,upsilon/OpenPNE3,upsilon/travis-test,balibali/KakiageSNS,tejima/testravis