Added headers for the CD library version 5.6.
CD is made by TecGRAF makers of IUP. It is a cross platform canvas library like cairo.
Added headers for TecGRAF's IM 3.8.1.

IM is a toolkit for Digital Imaging. IM is based on 4 concepts: Image Representation, Storage, Processing and Capture. The main goal of the library is to provide a simple API and abstraction of images for scientific applications.
Updated IUP headers to the most recent version 3.7.

The old IUP headers were the ancient version 2.3.
Adding remaining IUP headers.
Removed old IUP3 headers as they were outdated.