[grilo] (8 commits) ...build: Declare a variable for the internal grlnet dependency

[Victor Toso <victortoso src gnome org>]

Summary of changes:

  6209804... build: Depend on Meson 0.62 (*)
  2b6681d... build: Do not use deprecated get_pkgconfig_variable() (*)
  ba7d322... build: Let Meson fill out the pkg-config directories (*)
  2e53277... tools: Clean up the core keys generator script (*)
  1de4a96... build: Don't check for Python 2 (*)
  adceeaa... tools: Avoid a deprecation warning with newer GLib (*)
  6da3840... build: Use copy argument for configure_file() (*)
  ca5d6c8... build: Declare a variable for the internal grlnet dependenc (*)

(*) This commit already existed in another branch; no separate mail sent