Changes:
- Fix install script template (*.qs.in) to register on all platforms;
- Add patch version numter to display name ("CMake X.Y" -> "CMake X.Y.Z").

Now cpack_ifw_configure_file command used to configure
template files of component's scripts.

Now for these template files we can use QtIFW predefined
variables (like @VAR@) and template variables
in Qt/IFW/SDK/Creator templates style (like %VAR%).

Now CMake_INSTALL_INFIX advanced variable used to configure
CMake installation destination when package as part of QtSDK.

Usage: 'cmake ... -C Packaging/QtSDK/ToolsCMakeXX.cmake ...' to make
compatible package.

Frequently the apple script would execute before the disk image had been
fully mounted, and would fail. We now try to wait for the disk to be
mounted first.

Configure our use of the CPack DragNDrop generator to specify a custom
background image and script.