Implement an initializer_list constructor, which was probably
just forgotten so far. Technically this is a SC incompatible change,
since
QVarLengthArray<int> array = {10};
will now create an array with one element 10, instead of an empty array
with a reserved size of 10. Anyhow, keeping the inconsistency with the
STL / other Qt containers here would certainly do more harm than good
in the long run.
Task-number: QTBUG-45047
Change-Id: I4675880f93e141181250939942fa32300916b0e3
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
d3659bf88b