The main difference now between our qt.mk and Core's qt.mk, for options common to all the supported OS, are:
- `-no-feature-networkproxy` (used by them)
- `-no-openssl` (used by them)
- `-openssl-linked` (used by us)
- `$(package)_dependencies=openssl` (used by us)
- `$(package)_config_opts_* += OPENSSL_LIBS="*"` (used by us)
Depends on D15426