[vala] (5 commits) Non-fast-forward update to branch wip/bug567269

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/bug567269' 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:

  abaa2d5... Warn when using 'this' before chain up
  b65b335... Make lambdas work in chain-ups again
  0be1cb5... Allow multiple chain-up calls in the constructor
  a305cc3... Allow 'static' lambdas before chainup

Commits added to the branch:

  e90b726... Make lambdas work in chain-ups again
  7b06c4c... Allow multiple chain-up calls in the constructor
  f5a4f20... Allow 'static' lambdas before chainup
  3a40f6f... Warn when using 'this' before chain up
  1fd2f68... tests: Add some invalid "chain-up" tests