RFR: 8313321 : Set minimum python version in WebKit cmake scripts

[Hima Bindu Meda]

On Thu, 10 Aug 2023 23:00:11 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> I tested this on my MacBook Pro running macOS 13.3.1 and discovered that it has python 3.7.x:
> 
> ```
>   Could NOT find Python3: Found unsuitable version "3.7.3", but required is
>   at least "3.8.0" (found /usr/bin/python3, found components: Interpreter)
> ```
> 
> Since the motivation for checking the minimum was both to avoid python2, and because there is a problem with python 3.7 on Windows, I wonder if it would be better to only have Windows require 3.8 and have Mac join Linux in allowing 3.6. Of course, I could upgrade my python, but I wonder if other developers might run into it.

Based on the observation, changed the minimum version to 3.6 for mac and linux , and 3.8 for Windows

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PR Comment: https://git.openjdk.org/jfx/pull/1205#issuecomment-1677598701