Manpages of src:gtk+3.0 in Debian unstable

• broadwayd(1)
• gtk-builder-tool(1)
• gtk-encode-symbolic-svg(1)
• gtk-launch(1)
• gtk-query-immodules-3.0(1)
• gtk-query-settings(1)
• gtk3-demo-application(1)
• gtk3-demo(1)
• gtk3-icon-browser(1)
• gtk3-widget-factory(1)