[vala] (90 commits) Non-fast-forward update to branch wip/singleton

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/singleton' 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:

  b539457... Add support for singleton object classes

Commits added to the branch:

  8c9f486... codegen: Call ref_sink on objects passed to generic type (*)
  93cfba9... codegen: Free errors after returning them on the GDBusMetho (*)
  ed1ba8c... tests: Add more "method" tests to increase coverage (*)
  7a23383... tests: Add "girwriter" test to increase coverage (*)
  da84af1... tests: Add "gtktemplate" test to increase coverage (*)
  a64e29c... tests: Deal with libtool differences resulting in lt-valac  (*)
  eac5c56... gstreamer: Update from 1.15+ git master (*)
  8d3b526... gtk+-3.0: Update to 3.23.2+6b6e53fd (*)
  0161a74... gtk+-4.0: Update to 3.94.0+4e868584 (*)
  3499d33... Replace `%s` with `%s' in format strings of output messages (*)
  19614b6... girparser: Actually resolve type-arguments to be able to bo (*)
  0f2beef... vapi: Regenerate GIR-based bindings to fix unsupported type (*)
  a0c8376... tests: No, really, stacked arrays are not supported (*)
  09adaf2... tests: Add invalid test for "unsupported stacked arrays" (*)
  10f72d4... gdk-3.0: Atom is an IntegerType (*)
  99d1fd0... vala: Add consts/methods to retrieve and check library vers (*)
  a17ee48... Use dedicated version api of libvala internally as well (*)
  6bd9064... glib-2.0: Add (u)long.parse/try_parse() (*)
  8119fd1... Release 0.41.91 (*)
  c43c871... glib-2.0: Add missing return of Queue.remove*() and add Has (*)
  2190d03... codegen: Fix floating reference regression with Variants (*)
  743287e... build: Correctly quote square brackets in regular expressio (*)
  e5d50c5... glib-2.0: Add float.parse/try_parse() (*)
  c2d9cae... webkit2gtk-4.0: Update to 2.21.91 (*)
  84c90c9... gstreamer: Update from 1.15+ git master (*)
  746530b... codegen: Call ref_sink on Object.new_valist/new_with_proper (*)
  7bbed02... vala: Don't bail early on property with not supported defau (*)
  bb9dc34... manual: Update from wiki.gnome.org (*)
  f6a451f... Release 0.41.92 (*)
  a1a14b2... webkit2gtk-4.0: Update to 2.21.92 (*)
  49b7205... vapi: Update GIR-based bindings (*)
  ffdf368... gstreamer: Update from 1.15+ git master (*)
  f2bfac7... Release 0.42.0 (*)
  b79a4a1... vapi: Update GIR-based bindings (*)
  c124f82... glib-2.0: Add some 2.58 symbols (*)
  1d34185... vapi: Remove libgda-4.0, libgda-report-4.0 bindings (*)
  0bf26d9... vapi: Add gnome-desktop-3.0 bindings (*)
  9a43c31... tests: Check uchar[] and uint8[] compatibility (*)
  4b543fc... test: Add property lock test (*)
  8895514... tests: Actually check canonical cname of properties and sig (*)
  88aee22... gtk+-4.0: Update to 3.94.0+f3e6d00d (*)
  0e7ea43... vapi: Update GIR-based bindings (*)
  2539c2d... vapigen: Warn if the library argument doesn't match any pac (*)
  2d6c933... Release 0.42.1 (*)
  36893d1... Bump version suffix (*)
  38781a5... codegen: Emit G_DEFINE_AUTOPTR_CLEANUP_FUNC() for classes (*)
  ae52240... codewriter: Use List.sort() instead of custom local impleme (*)
  e75900e... gtk+-3.0: Treat Gtk.IconInfo as GLib.Object which it is sin (*)
  5e9e21f... vala: Add Block.get_local_constants() (*)
  00bd656... libxml-2.0: Add missing context parameter in OutputWriteCal (*)
  de01c08... x11: Add binding for XCreateSimpleWindow (*)
  6cb5e13... g-i: Fix use after free in scanner (*)
  a7dcb10... codegen: Fix typo in is_pure_ccode_expression() (*)
  6dbd255... vala: Check if ArrayType supports its given element-type in (*)
  790edc8... valadoc: Fix some string escaping which gettext complains a (*)
  74e33e1... vapi: Update GIDL-based bindings to fix unsupported type-ar (*)
  a3cbbad... glib-2.0: Set DateTime.now () to use local time zone as the (*)
  a57d92e... glib-2.0: Add feature_test_macro details for Time struct's  (*)
  8ecb47f... tests: Add "unsupported use of length field" test to increa (*)
  77ac049... tests: Add invalid "array concatenation" test to increase c (*)
  c6059a2... tests: Add "GenericAccessors" tests to increase coverage (*)
  458d5f5... tests: Add "missing class prerequisite for interface" test  (*)
  ff9bacb... tests: Add invalid "duplicating instance" test to increase  (*)
  194cec9... tests: Add invalid "method to delegate" test to increase co (*)
  12a354a... tests: Add invalid "construct without GObject" test to incr (*)
  50a3683... tests: Add invalid "property for Object() chainup" tests to (*)
  9584ad4... vala: Return early for invalid initializer of local variabl (*)
  088d325... tests: Add invalid variable declaration tests to increase c (*)
  5c4110e... tests: Update field "owned to unowned" test to increase cov (*)
  9dc710e... tests: Add invalid "object creation" tests to increase cove (*)
  105698a... tests: Add some "yield" test to increase coverage (*)
  ce7c31e... codewriter: Prepend "yield" if is_yield_expression is set o (*)
  898e45a... vala: Enforce "return yield ..." syntax to be expected (*)
  9b50d67... tests: Add some invalid "signal" tests to increase coverage (*)
  cd0b3a9... Move some errors from signal-module to the semantic-analyze (*)
  8c9a785... Drop deprecated syntax support of += and -= for signals (*)
  62328aa... Drop deprecated syntax support of # modifier and operator (*)
  6a89741... gtk+-4.0: Update to 3.94.0+d90e2733 (*)
  b4400d1... gstreamer: Update from 1.15+ git master (*)
  3777c1e... vapi: Update GIR-based bindings (*)
  2eee4d0... build: Unconditionally add conditional VALAFLAGS to make bo (*)
  1dae711... build: Allow disabling the build of valadoc (*)
  81658eb... tests: Extent "girwriter" test to increase coverage (*)
  837d593... codegen: Replace invalid array-length assert with internal  (*)
  c209c15... codegen: Make unreachable error an internal error (*)
  b51c23f... gstreamer: Update from 1.15+ git master (*)
  e1297d9... codegen: Initialize internal temp-variables used as referen (*)
  861c86a... ccode: Fix typo and actually check "end_decls" (*)
  ee795f4... test: Add some invalid "non-null" tests (*)
  dc7202d... Add support for SingleInstance attribute for GObject classe

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