Added C-style comment folding.

This is a "back-port" for 57f2b3e44d from master
into 2.0.

Done-with: ckamm

src/libs/qmljs/qmljsscanner.cpp

@@ -77,7 +77,7 @@ const _Tp *end(const _Tp (&a)[N])
 }
 
 Scanner::Scanner()
-    : _state(0),
+    : _state(Normal),
       _scanComments(true)
 {
 }
@@ -122,11 +122,6 @@ static bool isNumberChar(QChar ch)
 
 QList<Token> Scanner::operator()(const QString &text, int startState)
 {
-    enum {
-        Normal = 0,
-        MultiLineComment = 1
-    };
-
     _state = startState;
     QList<Token> tokens;
 

src/libs/qmljs/qmljsscanner.h

@@ -77,13 +77,18 @@ public:
 class QMLJS_EXPORT Scanner
 {
 public:
+    enum {
+        Normal = 0,
+        MultiLineComment = 1
+    };
+
     Scanner();
     virtual ~Scanner();
 
     bool scanComments() const;
     void setScanComments(bool scanComments);
 
-    QList<Token> operator()(const QString &text, int startState = 0);
+    QList<Token> operator()(const QString &text, int startState = Normal);
     int state() const;
 
     bool isKeyword(const QString &text) const;