Fixes: Implement make install target, Step 1

Details: Moving files so that the local layout corresponds to the layout pushed by make install.
Adjust Make target, modify the resource path of the loader to find the resources in the
right place. All pathes are still looked up relative to binaryPath(), libs are found via
relative rpath.

doc/doc.pri

@@ -7,7 +7,7 @@ unix {
 }
 
 QHP_FILE = $$OUT_PWD/doc/html/qtcreator.qhp
-QCH_FILE = $$OUT_PWD/doc/qtcreator.qch
+QCH_FILE = $$OUT_PWD/share/doc/qtcreator/qtcreator.qch
 
 unix {
 html_docs.commands = $$QDOC $$PWD/qtcreator.qdocconf

src/plugins/coreplugin/coreimpl.cpp

@@ -148,7 +148,7 @@ QString CoreImpl::resourcePath() const
 #if defined(Q_OS_MAC)
     return QDir::cleanPath(QCoreApplication::applicationDirPath()+QLatin1String("/../Resources"));
 #else
-    return QDir::cleanPath(QCoreApplication::applicationDirPath());
+    return QDir::cleanPath(QCoreApplication::applicationDirPath())+"/../share/qtcreator";
 #endif
 }