Update CodeMirror to version 5.49.0 (#8381)

* Update CodeMirror to version 5.49.0

* Update CodeMirror versions in librejs and VERSIONS

public/vendor/plugins/codemirror/mode/d/d.js

@@ -1,5 +1,5 @@
 // CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
+// Distributed under an MIT license: https://codemirror.net/LICENSE
 
 (function(mod) {
   if (typeof exports == "object" && typeof module == "object") // CommonJS
@@ -44,7 +44,7 @@ CodeMirror.defineMode("d", function(config, parserConfig) {
     }
     if (ch == "/") {
       if (stream.eat("+")) {
-        state.tokenize = tokenComment;
+        state.tokenize = tokenNestedComment;
         return tokenNestedComment(stream, state);
       }
       if (stream.eat("*")) {
@@ -182,7 +182,12 @@ CodeMirror.defineMode("d", function(config, parserConfig) {
       else return ctx.indented + (closing ? 0 : indentUnit);
     },
 
-    electricChars: "{}"
+    electricChars: "{}",
+    blockCommentStart: "/*",
+    blockCommentEnd: "*/",
+    blockCommentContinue: " * ",
+    lineComment: "//",
+    fold: "brace"
   };
 });
 

public/vendor/plugins/codemirror/mode/d/index.html

@@ -10,7 +10,7 @@
 <script src="d.js"></script>
 <style>.CodeMirror {border: 2px inset #dee;}</style>
 <div id=nav>
-  <a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
+  <a href="https://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
 
   <ul>
     <li><a href="../../index.html">Home</a>

public/vendor/plugins/codemirror/mode/d/test.js

@@ -0,0 +1,11 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/LICENSE
+
+(function() {
+  var mode = CodeMirror.getMode({indentUnit: 2}, "d");
+  function MT(name) { test.mode(name, mode, Array.prototype.slice.call(arguments, 1)); }
+
+  MT("nested_comments",
+     "[comment /+]","[comment comment]","[comment +/]","[variable void] [variable main](){}");
+
+})();