[vala] Created tag 0.50.6

[Rico Tzschichholz <ricotz src gnome org>]

The signed tag '0.50.6' was created.

Tagger: Rico Tzschichholz <ricotz ubuntu com>
Date: 1617872975 +0200

    0.50.6

Changes since the last tag '0.50.5':

Rico Tzschichholz (23):
      girparser: Don't guess length of xml header, iterate forward to <repository>
      libvaladoc/girimporter: Don't guess length of xml header, iterate forward to <repository>
      libvaladoc/girimporter: parse_constant() use "c:identifier" attribute first
      vala: Mark tranformed static member-access as qualified
      gtk+-3.0: Fix ModuleInitFunc binding
      gio-2.0: Fix TlsPassword.get_value() binding
      girwriter: namespace expects "c:symbol-prefixes" attribute
      codegen: Improve handling of ellipsis parameter in get_ccode_name()
      tests/girwriter: Add tests for implicit parameters in virtual-method/callback
      girwriter: Don't use instance-parameter inside callback
      girwriter: Don't use instance-parameter inside callback (2)
      javascriptcoregtk-4.0,webkit2gtk-web-extension-4.0: Fix some binding errors
      codegen: Fix default value of get_ccode_destroy_notify_pos() and make use of it
      codegen: Always use CCodeConstant for NULL
      codegen: Don't override valid target/destroy of previous lambda argument
      pixman-1: Fix some bindings errors
      zlib: Fix some bindings errors
      x11: Fix some bindings errors
      libusb-1.0: Fix some bindings errors
      libusb: Fix some bindings errors
      codegen: Don't call *_instance_init() in compact class chainup
      rest-0.7: Fix OAuthProxyAuthCallback binding
      Release 0.50.6