[TYPO3-core] RFC #9745: Add INSTALL.txt to TYPO3 source package

[Dmitry Dulepov]

Hi!

Christopher Stelmaszyk wrote:
> I have already done that!
> 
> Dmitry, please use the file as I posted it as a basis for further changes.
> Alternativelly you can merge my changes to your version (but that might be 
> quite some extra-work).

I merged most of your changes. But some of them disagree with what I heard on the course. That cousr was UK English teacher. I left those changes out.

-- 
Dmitry Dulepov
TYPO3 core team
"Sometimes they go bad. No one knows why" (Cameron, TSCC, "Dungeons&Dragons")