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.