WIP: Require meson 0.50.0
WARNING: Project targetting '>= 0.42.0' but tried to use feature introduced in '0.50.0': install arg in configure_file
WARNING: Project specifies a minimum meson_version '>= 0.42.0' but uses features which were added in newer versions:
* 0.50.0: {'install arg in configure_file'}
We haven't changed anything here, so it's surprising, but the files do need to be installed....
Edited by Michael Catanzaro