Rename `renderOptions` to `encodeGNUCommandLine`

... as suggested by @edolstra

lib/cli.nix

@@ -6,10 +6,10 @@
      boilerplate related to command-line construction for simple use cases.
 
      Example:
-       renderOptions { foo = "A"; bar = 1; baz = null; qux = true; v = true; }
+       encodeGNUCommandLine { foo = "A"; bar = 1; baz = null; qux = true; v = true; }
        => " --bar '1' --foo 'A' --qux -v"
   */
-  renderOptions =
+  encodeGNUCommandLine =
     options:
       let
         render = key: value:

lib/default.nix

@@ -121,7 +121,7 @@ let
       isOptionType mkOptionType;
     inherit (asserts)
       assertMsg assertOneOf;
-    inherit (cli) renderOptions;
+    inherit (cli) encodeGNUCommandLine;
     inherit (debug) addErrorContextToAttrs traceIf traceVal traceValFn
       traceXMLVal traceXMLValMarked traceSeq traceSeqN traceValSeq
       traceValSeqFn traceValSeqN traceValSeqNFn traceShowVal

lib/tests/misc.nix

@@ -443,7 +443,7 @@ runTests {
 
   testRenderOptions = {
     expr =
-       renderOptions
+       encodeGNUCommandLine
          { foo = "A";
 
            bar = 1;