[Buildroot] qt5webkit: host-python dependency issue in Python3 environment

[Yegor Yefremov]

My project uses both Python3 and Qt5 including qt5webkit package. The
problem in this particular constellation is, that
output/target/usr/bin/python is a symlink to
output/host/usr/bin/python2. i.e. host-python2 will be also built.
This makes python usage on target impossible.

I think this happens because qt5webkit has host-python dependency
regardless of the selected Python flavor.

Can qt5webkit be also built with host-python3?

Regards,
Yegor