[libgee] (21 commits) Non-fast-forward update to branch meson

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'meson' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  a7dee63... Meson: added basic build system configuration
  0271182... Meson: Added devhelp documentation generation
  03a0d64... Meson: Added internal headers VAPI generation
  8c65d09... Meson: Unit Tests ported to Meson
  cc87d1e... Meson: Removed Utils namespace in docs
  c154c78... Meson: Fix .pc file generation variables
  6eed387... Meson: benchmarks ported to Meson
  32d89c9... Meson: internal asserts can be disable
  4089a5d... Meson: Enable consistency check is now possible
  155faec... Removing unused configurations for internal headers
  9f5d26d... Can build benchmark
  30211ae... Added enable-doc option to Meson
  43a2b64... Added infrastructure to disable introspection

Commits added to the branch:

  5e66324... Release 0.20.2 (*)
  505698a... Fix "Access to possible `null'" warnings and use unsafe cas (*)
  35226d9... Guard GLib.Cond.wait/wait_until calls against spurious or s (*)
  2b646cc... Flatten call structure a bit (*)
  56b10bc... Release 0.20.3 (*)
  8b76b8c... Various English and typo fixes in the documentation (*)
  63d2b88... Replace Memory.dup() with GLib.malloc() and Memory.copy() (*)
  2ba2faf... Remove invalid usage of type-argument for Gee.Future.Source (*)
  a42ad8f... Meson: added basic build system configuration
  30570ce... Meson: Added devhelp documentation generation
  3556791... Meson: Added internal headers VAPI generation
  867c904... Meson: Unit Tests ported to Meson
  eb7cdf5... Meson: Removed Utils namespace in docs
  432f49c... Meson: Fix .pc file generation variables
  b54ff0c... Meson: benchmarks ported to Meson
  56bdf30... Meson: internal asserts can be disable
  8d81615... Meson: Enable consistency check is now possible
  5df51a4... Removing unused configurations for internal headers
  2e9db6a... Can build benchmark
  0789c52... Added enable-doc option to Meson
  9587779... Added infrastructure to disable introspection

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