contrib: migrate off of a couple of bitbucket URLs

I noticed this when diffing the thg installer against Mercurial to see what was
missing.  There are a handful of other URLs in i18n and extension example help
text if anyone cares to update those.

Differential Revision: https://phab.mercurial-scm.org/D12606

contrib/packaging/wix/readme.rst

@@ -1,57 +1,57 b''
 WiX Installer
 =============
 
 The files in this directory are used to produce an MSI installer using
 the WiX Toolset (http://wixtoolset.org/).
 
 The MSI installers require elevated (admin) privileges due to the
 installation of MSVC CRT libraries into the Windows system store. See
 the Inno Setup installers in the ``inno`` sibling directory for installers
 that do not have this requirement.
 
 Requirements
 ============
 
 Building the WiX installer requires a Windows machine.
 
 The following system dependencies must be installed:
 
 * Python 3.6+ (to run the ``packaging.py`` script)
 
 Building
 ========
 
 The ``packaging.py`` script automates the process of producing an MSI
 installer. It manages fetching and configuring non-system dependencies
 (such as gettext, and various Python packages).  It can be run from a
 basic cmd.exe Window (i.e. activating the MSBuildTools environment is
 not required).
 
 From the prompt, change to the Mercurial source directory. e.g.
 ``cd c:\src\hg``.
 
 Next, invoke ``packaging.py`` to produce an MSI installer.::
 
    $ py -3 contrib\packaging\packaging.py \
        wix --pyoxidizer-target x86_64-pc-windows-msvc
 
 If everything runs as intended, dependencies will be fetched and
 configured into the ``build`` sub-directory, Mercurial will be built,
 and an installer placed in the ``dist`` sub-directory. The final line
 of output should print the name of the generated installer.
 
 Additional options may be configured. Run ``packaging.py wix --help``
 to see a list of program flags.
 
 Relationship to TortoiseHG
 ==========================
 
 TortoiseHG uses the WiX files in this directory.
 
 The code for building TortoiseHG installers lives at
-https://bitbucket.org/tortoisehg/thg-winbuild and is maintained by
+https://foss.heptapod.net/mercurial/tortoisehg/thg-winbuild and is maintained by
 Steve Borho ([e-mail]).
 
 When changing behavior of the WiX installer, be sure to notify
 the TortoiseHG Project of the changes so they have ample time
 provide feedback and react to those changes.

contrib/win32/mercurial.ini

@@ -1,97 +1,97 b''
 ; System-wide Mercurial config file.
 ;
 ; !!!  Do Not Edit This File !!!
 ;
 ; This file will be replaced by the installer on every upgrade.
 ; Editing this file can cause strange side effects on Vista.
 ;
-; http://bitbucket.org/tortoisehg/stable/issue/135
+; https://foss.heptapod.net/mercurial/tortoisehg/thg/-/issues/135
 ;
 ; To change settings you see in this file, override (or enable) them in
 ; your user Mercurial.ini file, where USERNAME is your Windows user name:
 ;
 ; XP or older    - C:\Documents and Settings\USERNAME\Mercurial.ini
 ; Vista or later - C:\Users\USERNAME\Mercurial.ini
 
 
 [ui]
 ; editor used to enter commit logs, etc.  Most text editors will work.
 ; editor = notepad
 ; show changed files and be a bit more verbose if True
 ; verbose = True
 ; colorize commands output
 ; color = auto
  
 ; username data to appear in commits
 ; it usually takes the form: Joe User <[e-mail]>
 ; username = Joe User <[e-mail]>
 
 ; In order to push/pull over ssh you must specify an ssh tool
 ;ssh = "C:\Progra~1\TortoiseSVN\bin\TortoisePlink.exe" -ssh -2
 ;ssh = C:\cygwin\bin\ssh
 
 ;
 ; For more information about mercurial extensions, start here
 ; https://www.mercurial-scm.org/wiki/UsingExtensions
 ;
 ; Extensions shipped with Mercurial
 ;
 [extensions]
 ;acl =
 ;blackbox =
 ;bugzilla =
 ;children =
 ;churn =
 ;convert =
 ;eol =
 ;extdiff =
 ;fetch =
 ;gpg =
 ;hgk =
 ;highlight = 
 ;histedit =
 ;interhg =
 ;largefiles =
 ;keyword =
 ;mq =
 ;notify =
 ;pager =
 ;patchbomb =
 ;progress =
 ;purge =
 ;rebase =
 ;record =
 ;relink =
 ;schemes =
 ;share =
 ;transplant =
 ;win32mbcs =
 ;zeroconf =
 
 ;
 ; Define external diff commands
 ;
 [extdiff]
 ;cmd.bc3diff = C:\Program Files\Beyond Compare 3\BCompare.exe
 ;cmd.vdiff = C:\Progra~1\TortoiseSVN\bin\TortoiseMerge.exe
 ;cmd.vimdiff = gvim.exe
 ;opts.vimdiff = -f "+next" "+execute 'DirDiff' fnameescape(argv(0)) fnameescape(argv(1))"
 
 
 [hgk]
 ; Replace the following with your path to hgk, uncomment it and 
 ; install ActiveTcl (or another win32 port like tclkit)
 ; path="C:\Program Files\Mercurial\Contrib\hgk.tcl"
 ; vdiff=vdiff
  
 
 ;
 ; The git extended diff format can represent binary files, file
 ; permission changes, and rename information that the normal patch format
 ; cannot describe.  However it is also not compatible with tools which
 ; expect normal patches. so enable git patches at your own risk.
 ;
 [diff]
 ;git = false
 ;nodates = false