bulk rename macOS

attic/sitemap.markdown

audience/mac_user.markdown

audience/user_of_managed_workstations_at_d-phys.markdown

backups/backuppc.markdown

backups/backuppc_osx.markdown

osx/802_1x.markdown

osx/command_line_tools.markdown

...w_to_choose_your_interface_language_with_macos_x.markdown

osx/how_to_improve_your_macos_x_workstation.markdown

osx/index.markdown

osx/keychain.markdown

osx/latex.markdown

osx/print_settings.markdown

osx/unicodeit.markdown

osx/vpn_mac.markdown

printing/how_to_add_an_id_printer_on_osx.markdown

...dation_for_the_use_and_care_of_data_on_computers.markdown

web/how_to_get_a_personal_homepage.markdown

web/proxy.markdown