QmlJS: Separate metaObjectRevision from minor version number.

They need not to be identical. Additionally:
* Rename ImportInfo::name to path, because that's what it does.
* Add ImportInfo::name, for getting the uri with the names
  separated by dots.
* Allow for exportMetaObjectRevisions in qmltypes files.
* Allow for exports with an empty type name, as generated by
  qmlRegisterRevision. They are used for associating meta object
  revisions with non-exported types.
* Rewrite the Qt 4.7 import to QtQuick 1.0 at an early stage. In
  preparation for the Qt 5 type information update, where Qt 4.7
  is gone.

Change-Id: Ia287193623d9530a56b9eb8d2481d50aabd94c3e
Reviewed-on: http://codereview.qt-project.org/5309
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@nokia.com>

src/libs/languageutils/fakemetaobject.cpp

@@ -157,11 +157,14 @@ void FakeMetaObject::addExport(const QString &name, const QString &package, Comp
     exp.type = name;
     exp.package = package;
     exp.version = version;
-    exp.packageNameVersion = QString::fromLatin1("%1/%2 %3").arg(
-                package, name,
-                version.toString());
     m_exports.append(exp);
 }
+
+void FakeMetaObject::setExportMetaObjectRevision(int exportIndex, int metaObjectRevision)
+{
+    m_exports[exportIndex].metaObjectRevision = metaObjectRevision;
+}
+
 QList<FakeMetaObject::Export> FakeMetaObject::exports() const
 { return m_exports; }
 FakeMetaObject::Export FakeMetaObject::exportInPackage(const QString &package) const
@@ -219,5 +222,8 @@ QString FakeMetaObject::attachedTypeName() const
 void FakeMetaObject::setAttachedTypeName(const QString &name)
 { m_attachedTypeName = name; }
 
+FakeMetaObject::Export::Export()
+    : metaObjectRevision(0)
+{}
 bool FakeMetaObject::Export::isValid() const
-{ return !type.isEmpty(); }
+{ return version.isValid() || !package.isEmpty() || !type.isEmpty(); }