Rewrite and refactor NSIS install.

[DHorse2]

The install was my first effort using NSIS and will need to support custom pages.
There will be a section later for a standardized set of FOSS benchmark software. IE. BootRacer and similar.
This includes tools for screenshots and later the emailing of logs by the user.
Under evaluation.

All the preamble is to explain it's current rather elaborate structure.

[DHorse2]

Note. Due to long test cycles multiple related and unrelated features are included in each cycle.
Yes this breaks with Agile methodologies.

At the same time this remains a one man project and will have to transition to best practices with release 1.0 or Beta.
I am flexible on this.