Replace links to bugzilla by gitlab

HACKING

 Bug tracking system
 ===================
 
-Thunar uses the Xfce bug tracking system at https://bugzilla.xfce.org/,
+Thunar uses the Xfce bug tracking system at https://gitlab.xfce.org/xfce/thunar,
 hosted and maintained by the Xfce project.
 
 
 Patches
 =======
 
-Please submit patches to the Xfce bug tracking system or to the thunar-dev
-mailinglist. Your patch should be in unified diff format (the -u option
-to GNU diff) and it must comply with the coding style described below.
+Please submit merge requests to the Xfce GitLab instance.
+Your code must comply with the coding style described below.
 
-Please send a patch against a recent version of this package. Patches
-against the Git master branch are most preferable. You can always
+Please base on work against the master branch of this package. You can always
 clone the Thunar repository from
 
-  https://git.xfce.org/xfce/thunar
+  https://gitlab.xfce.org/xfce/thunar
 
 
 Feature requests
 ================
 
-Please file feature requests to the Xfce bug tracking system
-(https://buzilla.xfce.org, product Thunar) with a Severity of
-enhancement. Make sure that your feature request wasn't reported
-already before; requesting a feature several times won't increase
-the changed that it gets added!
+Please file feature requests to the Xfce's GitLab
+(https://gitlab.xfce.org/xfce/thunar).
+Make sure that your feature request wasn't reported already before; requesting
+a feature several times won't increase the changed that it gets added!
 
 
 Coding Style
@@ -63,4 +60,4 @@ Coding Style
 Release process
 ===============
 
-Yet to be defined!
+Refer to https://www.xfce.org/about/releasemodel

README.md

@@ -52,6 +52,6 @@ Thunar supports the following standards/specifications:
 
 ## How to report bugs?
 
-Bugs should be reported to [Xfce's Bugzilla](https://bugzilla.xfce.org), product Thunar. You will need to create an account for yourself.
+Bugs should be reported to [Xfce's GitLab](https://gitlab.xfce.org/xfce/thunar). You will need to create an account for yourself.
 
 Please read [how to report bugs ](https://docs.xfce.org/contribute/start#bug_reporting_and_testing) for information on where to send changes or bugfixes.

configure.ac.in

@@ -40,8 +40,8 @@ m4_define([thunar_debug_default], [ifelse(thunar_version_tag(), [git], [yes], [m
 dnl ***************************
 dnl *** Initialize autoconf ***
 dnl ***************************
-AC_INIT([thunar], [thunar_version], [https://bugzilla.xfce.org/], [thunar])
 AC_COPYRIGHT([Copyright (c) 2004-2020 The Thunar development team. All rights reserved.])
+AC_INIT([thunar], [thunar_version], [https://gitlab.xfce.org/xfce/thunar], [thunar])
 AC_PREREQ([2.60])
 AC_CONFIG_MACRO_DIR([m4])
 AC_CANONICAL_TARGET()

org.xfce.thunar.appdata.xml.in

@@ -15,7 +15,7 @@
     </_p>
   </description>
   <url type="homepage">https://xfce.org/projects</url>
-  <url type="bugtracker">https://bugzilla.xfce.org/describecomponents.cgi?product=Thunar</url>
+  <url type="bugtracker">https://gitlab.xfce.org/xfce/thunar</url>
   <url type="help">https://docs.xfce.org/xfce/thunar/start</url>
 
   <screenshots>