[Development] Switch the main "Qt Build System"

[Matthew Woehlke]

On 09/06/2020 03.55, Joerg Bornemann wrote:
> The description of QT_NO_MAKE_TESTS is: "Should tests be built as part 
> of the default 'all' target." Meaning this variable controls whether 
> tests are build by default.

Might I suggest a less obtuse name? Something along the lines of 
QT_TESTS_EXCLUDE_FROM_ALL would be more typical.

-- 
Matthew