It takes ages to unzip OTB standalone package on Windows
Description
It takes more than 5 minutes to unzip the OTB standalone archive on Windows. It is due to the header sources which are embedded in the archive and used for the XDK and development purpose.
As most windows users don't need the XDK I would suggest to keep the source in the package but in a zip archive (not unzipped by default). We can add a script or an item in the README to describe how to unzip sources if the user need them.
It will save time for most users of the binary package on Windows.
Steps to reproduce
Describe as precisely as possible how to reproduce the bug. Try to isolate a minimal number of steps. Also describe reproducibility (always, random ...).
Configuration information
OS, OTB version or tag, information related to build (binaries, superbuild, system libs ...)