Update package naming guidelines to encourage consideration of the gl…

…obal namespace (JuliaLang#53514)

Co-authored-by: Daniel Wennberg <daniel.wennberg@gmail.com>
Co-authored-by: Matt Bauman <mbauman@juliahub.com>

doc/src/tutorials/creating-packages.md

@@ -605,9 +605,22 @@ may fit your package better.
 
      * `CPLEX.jl` wraps the `CPLEX` library, which can be identified easily in a web search.
      * `MATLAB.jl` provides an interface to call the MATLAB engine from within Julia.
+
 7. Avoid naming a package closely to an existing package
      * `Websocket` is too close to `WebSockets` and can be confusing to users. Rather use a new name such as `SimpleWebsockets`.
 
+8. Avoid using a distinctive name that is already in use in a well known, unrelated project.
+     * Don't use the names `Tkinter.jl`, `TkinterGUI.jl`, etc. for a package that is unrelated
+       to the popular `tkinter` python package, even if it provides bindings to Tcl/Tk.
+       A package name of `Tkinter.jl` would only be appropriate if the package used Python's
+       library to accomplish its work or was spearheaded by the same community of developers.
+     * It's okay to name a package `HTTP.jl` even though it is unrelated to the popular rust
+       crate `http` because in most usages the name "http" refers to the hypertext transfer
+       protocol, not to the `http` rust crate.
+     * It's okay to name a package `OpenSSL.jl` if it provides an interface to the OpenSSL
+       library, even without explicit affiliation with the creators of the OpenSSL (provided
+       there's no copyright or trademark infringement etc.)
+
 ## Registering packages
 
 Once a package is ready it can be registered with the [General Registry](https://github.com/JuliaRegistries/General#registering-a-package-in-general) (see also the [FAQ](https://github.com/JuliaRegistries/General#faq)).