[gjs] Created tag 1.55.90

[Philip Chimento <pchimento src gnome org>]

The unsigned tag '1.55.90' was created.

Tagger: Philip Chimento <philip chimento gmail com>
Date: 1549404934 -0800

    Version 1.55.90
    
    - New JS API: It's now possible to call and implement DBus methods whose
      parameters or return types include file descriptor lists (type signature 'h'.)
      This involves passing or receiving a Gio.UnixFDList instance along with the
      parameters or return values.
    
      To call a method with a file descriptor list, pass the Gio.UnixFDList along
      with the rest of the parameters, in any order, the same way you would pass a
      Gio.Cancellable or async callback.
    
      For return values, things are a little more complicated, in order to avoid
      breaking existing code. Previously, synchronously called DBus proxy methods
      would return an unpacked GVariant. Now, but only if called with a
      Gio.UnixFDList, they will return [unpacked GVariant, Gio.UnixFDList]. This
      does not break existing code because it was not possible to call a method with
      a Gio.UnixFDList before, and the return value is unchanged if not calling with
      a Gio.UnixFDList. This does mean, unfortunately, that if you have a method
      with an 'h' in its return signature but not in its argument signatures, you
      will have to call it with an empty FDList in order to receive an FDList with
      the return value, when calling synchronously.
    
      On the DBus service side, when receiving a method call, we now pass the
      Gio.UnixFDList received from DBus to the called method. Previously, sync
      methods were passed the parameters, and async methods were passed the
      parameters plus the Gio.DBusInvocation object. Appending the Gio.UnixFDList to
      those parameters also should not break existing code.
    
      See the new tests in installed-tests/js/testGDBus.js for examples of calling
      methods with FD lists.
    
    - We have observed on the CI server that GJS 1.55.90 will hang forever while
      running the test suite compiled with GCC 9.0.0 and configured with the
      --enable-asan and --enable-ubsan arguments. This should be addressed in one of
      the following 1.55.x releases.
    
    - Closed bugs and merge requests:
      * GDBus proxy overrides should support Gio.DBusProxy.call_with_unix_fd_list()
        [#204, !263, Philip Chimento]
      * Add regression tests for GObject vfuncs [!259, Jason Hicks]
      * GjsPrivate: Sources should be C files [!262, Philip Chimento]
      * build: Vendor last-good version of AX_CODE_COVERAGE [!264, Philip Chimento]

Changes since the last tag '1.55.4':

Jason Hicks (4):
      object: Allow checking the existence of vfunc properties on a prototype
      Add regression tests for GObject vfuncs
      Revert "object: Allow checking the existence of vfunc properties on a prototype"
      Fix GObject vfunc regression tests

Philip Chimento (9):
      build: Post-release version bump
      GjsPrivate: Sources should be C files
      Merge branch 'gjs-private-sources-should-be-c-files' into 'master'
      overrides: Allow DBus methods with file descriptor lists
      Merge branch 'allow-checking-vfunc-props' into 'master'
      Merge branch '204-dbus-file-handles' into 'master'
      build: Vendor last-good version of AX_CODE_COVERAGE
      Merge branch 'ptomato/gjs-test-m4' into HEAD
      release: Prepare for 1.55.90