65025 Move gen_l10n into flutter_tools (a: internationalization, cla: yes, team, tool)

65109 Revert “Add observatory Bonjour service to built iOS Info.plist bundle” (cla: yes, team, tool)

65112 [flutter_tools] exit with helpful message if where is missing on windows (cla: yes, tool, waiting for tree to go green)

65114 [flutter_tools] fix screenshot command in release mode and help documentation (cla: yes, tool, waiting for tree to go green)

65124 Require xcode_backend.sh arguments (introduced in Flutter v0.0.7) (cla: yes, platform-ios, t: xcode, team, tool, waiting for tree to go green)

65125 [flutter_tools] add EACCES to list of immediate exit tool conditions (cla: yes, tool)