Move CommandLine out of fileutils.h

to ProcessArgs and rename the files to commandline.*.
fileutils was a strange place for CommandLine, and this
reduces the dependencies needed for sdktool.

Change-Id: I9d7e8ffe8a3560f5d12934457b086f9446976883
Reviewed-by: hjk <hjk@qt.io>

src/plugins/languageclient/languageclientsettings.h

@@ -29,9 +29,8 @@
 
 #include <coreplugin/dialogs/ioptionspage.h>
 
-#include <utils/fileutils.h>
-
 #include <QAbstractItemModel>
+#include <QCoreApplication>
 #include <QJsonObject>
 #include <QLabel>
 #include <QPointer>
@@ -44,6 +43,7 @@ class QLineEdit;
 QT_END_NAMESPACE
 
 namespace Utils {
+class CommandLine;
 class FilePath;
 class PathChooser;
 class FancyLineEdit;