[vala] (15 commits) Non-fast-forward update to branch wip/meson

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/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:

  c790cf1... meson: Add initial build support
  f77ab08... meson: Allow static builds
  ebec22b... meson: Compile everything with stricter cflags
  44e9a00... WIP meson: Add tests
  4197364... WIP meson: Add internal-api-docs
  2f968be... Pass LD_LIBRARY_PATH as "env" where needed
  e7ac879... Broken evaluation of "Requires.private: gmodule-no-export-2
  31363c1... WIP meson: Add meson-bootstrap.sh

Commits added to the branch:

  dc03028... manual: Update from wiki.gnome.org (*)
  e13e0d6... Release 0.55.2 (*)
  0d6d200... vala: Some simplifications while TypeParameter is a TypeSym (*)
  ab482a7... vala: Add missing TraverseVisitor.visit_data_type() (*)
  9086fb1... tests: Generic type inference for static methods only in co (*)
  7b5c4f5... vala: Improve check of generic type references in static co (*)
  8885d24... codegen: Use correct target/destroy of delegate field initi (*)
  ffd9030... meson: Add initial build support
  4e09abe... meson: Allow static builds
  5dc6c6d... meson: Compile everything with stricter cflags
  4f2970a... WIP meson: Add tests
  23d3967... WIP meson: Add internal-api-docs
  e04b77d... Pass LD_LIBRARY_PATH as "env" where needed
  f566281... Broken evaluation of "Requires.private: gmodule-no-export-2
  b40e6ed... WIP meson: Add meson-bootstrap.sh

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