scm: add new method "shell_quote_command" at abstract adapter. git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/1.2-stable@6285 e93f8b46-1217-0410-a6f0-8f06a7374b81
scm: add new method "shell_quote_command" at abstract adapter. git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/1.2-stable@6285 e93f8b46-1217-0410-a6f0-8f06a7374b81