this is strlen(), but the name is matched to $$size(), just namespaced
to reflect that it operates on a string value rather than a list
variable.
[ChangeLog][qmake] Added $$str_size() function.
Change-Id: I56c8b863da244e66bd283257a66b197aa73b0e57
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
22f3800cac