cURL and libCURL for OpenVMS I64

This document provides instructions for installing and configuring the cURL and libCURL port for the OpenVMS I64 operating system, based on the 7.49.0 open-source release. It details system requirements, the installation process for the PCSI kit, and post-installation steps such as defining logical names and startup procedures. It also contains guidance for developers on using the libCURL API, including linking with shareable images and setting compiler options.