qmljs editor: test for reformatter

Add test cases for multiline comments.

Change-Id: I3e02560791b331c7e1892e9c0bb50cd64241a2bb
Reviewed-by: Erik Verbruggen <erik.verbruggen@qt.io>

tests/auto/qml/reformatter/comments.qml

@@ -0,0 +1,16 @@
+import QtQuick 2.0
+
+
+/* Comment 1
+   This is a multiline comment. */
+
+/*
+ Another multiline comment.
+
+ A slightly different formatting.
+*/
+Item {
+    /*
+      Indented multiline comment.
+      */
+}

tests/auto/qml/reformatter/reformatter.pro

@@ -8,3 +8,11 @@ TARGET = tst_reformatter
 
 SOURCES += \
     tst_reformatter.cpp
+
+DISTFILES += \
+    jssyntax.js \
+    objectliteral.js \
+    qmlreadonly.qml \
+    qmlsingleton.qml \
+    qmlsyntax.qml \
+    comments.qml