Commit f9752f39 authored by Jehan's avatar Jehan

meson: add a libmypaint < 1.4.0 warning.

Same as what I did for the configure script. Note that I break commits
in 2 to make the autotools commits easily backportable to gimp-2-10,
i.e. without any meson files.
parent 5da252ca
Pipeline #130517 passed with stages
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