manuals: split dev-manual/common-tasks.rst

A 500 KB source file is always harder to manage,
and can have section title conflicts.

So, the "Common Tasks" document is gone and all
its constituents are moved up one level.
You now have 40 chapters in the Development Tasks Manual.

(From yocto-docs rev: 8a45bc469411410020b8e688c137395fcaf3761b)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/sdk-manual/extensible.rst

@@ -652,7 +652,7 @@ counterparts.
    ``devtool upgrade``
    happens to be one. You can read about all the methods by which you
    can upgrade recipes in the
-   :ref:`dev-manual/common-tasks:upgrading recipes` section
+   :ref:`dev-manual/upgrading-recipes:upgrading recipes` section
    of the Yocto Project Development Tasks Manual.
 
 The ``devtool upgrade`` command is flexible enough to allow you to
@@ -1114,7 +1114,7 @@ links created within the source tree:
    -  ``sysroot-destdir/``: Contains a subset of files installed within
       :ref:`ref-tasks-install` that have been put into the shared sysroot. For
       more information, see the
-      ":ref:`dev-manual/common-tasks:sharing files between recipes`" section.
+      ":ref:`dev-manual/new-recipe:sharing files between recipes`" section.
 
    -  ``packages-split/``: Contains subdirectories for each package
       produced by the recipe. For more information, see the