Don't generate false positives on /* inside comments.

JSHint used to attempt to detect nested multiline comments but
that generated too many false positives:

    /**
     * To use bla.js provide path: bla("./*");
     */

In addition to that, nested multiline comments will error early
no matter what so there is no need for JSHint to warn about them:

    /*
     * /* Nested comment */
     */

So I just removed that check.

References:

Closes jshintGH-540
Closes jshintGH-599

jshint.js

@@ -785,7 +785,7 @@ var JSHINT = (function () {
         nxg = /[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
 
         // star slash
-        lx = /\*\/|\/\*/;
+        lx = /\*\//;
 
         // identifier
         ix = /^([a-zA-Z_$][a-zA-Z0-9_$]*)$/;
@@ -1426,10 +1426,6 @@ unclosedString:     for (;;) {
                                     errorAt("Unclosed comment.", line, character);
                                 }
                             }
-                            character += i + 2;
-                            if (s.substr(i, 1) === "/") {
-                                errorAt("Nested comment.", line, character);
-                            }
                             s = s.substr(i + 2);
                             token.comment = true;
                             break;

tests/unit/fixtures/gruntComment.js

@@ -0,0 +1,20 @@
+/**
+ * Grunt Task File
+ * ---------------
+ *
+ * Task: logless
+ * Description: Parses JavaScript files and removes logging statements
+ *
+ * Usage:
+ *
+ *  logless: {
+ *    task: {
+ *      src: ['file1.js', 'file2.js', 'other/stuff/*.js'],
+ *      dest: 'path/to/destination',
+ *      names: ['console', 'alert'],
+ *  strip: 'path/to/remove',
+ *      options: {beautify: true}
+ *    }
+ *  }
+ *
+ */

tests/unit/parser.js

@@ -192,10 +192,13 @@ exports.comments = function () {
     ];
 
     TestRun()
-        .addError(2, "Nested comment.")
-        .addError(2, "Unbegun comment.")
+        .addError(3, "Unbegun comment.")
         .addError(4, "Unclosed comment.")
         .test(code);
+
+    var src = "/* this is a comment /* with nested slash-start */";
+    TestRun().test(src);
+    TestRun().test(fs.readFileSync(__dirname + "/fixtures/gruntComment.js", "utf8"));
 };
 
 exports.regexp = function () {