Require meson 0.49

Could we require meson 0.49.0? It was released quite a long time ago and debian stable has 0.49, backports has 0.52 apparently.

added buildsystem label

mentioned in merge request !1079 (merged)

meson 0.49 was released on 2018-12-09, 0.47 on 2018-07-02 so it's just a difference of 5 months almost 2 years ago. We have to checks for meson 0.49 in our meson.build files and !1079 (merged) could be simplified if we require meson 0.49.

Yes, we can.

mentioned in merge request !1081 (merged)

closed with merge request !1081 (merged)

changed milestone to %0.8.0