Major INDI patch

This is a major INDI patch. The core INDI code was rewritten to
enable more flexibility and scalability in KStars INDI engine.
Changes to the INDI core and FITS Viewer are required for the complex
tasks performed by KStars Ekos tool. KStars can help in focusing
CCD images by measuring Half Flux Radius of stars within an image
and commanding the focuser device until an optimum focus is reached.
Using the device manager, it is now possible to group several
devices under one INDI server. Furthermore, KStars now supports
dynamic renaming of devices at run time.