New license request: Add new LGPL exception

[pombredanne]

License Name
The full name of the license, preferably as provided by the original authors.

TBD

License Homepage URL
The primary and/or most reliable URL that contains the text of this license and/or information about it. This is ideally a web page dedicated to the license, but it may also be a source file that contains the license text.

https://github.com/blunderer/libroxml/blob/76e6f423b1e055e221a6604e5bf1a9e810f62c75/License.txt

Reference URLs
Optionally provide URLs that contain references to the license.

License Notes
Optionally describe any aspects of the license that deserve special attention.

libroxml is commonly seen in device firmwares.

This exception is close to the linking-exception-lgpl-2.0-plus, but comes with extra text in the middle:

...
The resulting executable may therefore be distributed without complying
with the LGPL terms that state that recipients of your executable must be able
to relink against modified versions of the library.
It is also appreciated if you mention in the README or CREDITS the use of
this library.
...

The common notice is:

 * SPDX-Licence-Identifier:     lgpl-2.1+
 * the author added a static linking exception, see license.txt.
 *

The matched_text_diagnostics: is:

    LGPL [v2].[1] ([below]), the copyright holders of
    this library give you permission to [statically] link this library
    with independent modules to produce an executable, regardless of the license
    terms of these independent modules, and to copy and distribute the resulting
    executable under terms of your choice, provided that you also meet, for each
    linked independent module, the terms and conditions of the license of that
    module. [The] [resulting] [executable] [may] [therefore] [be] [distributed] [without] [complying]
    [with] [the] [LGPL] [terms] [that] [state] [that] [recipients] [of] [your] [executable] [must] [be] [able]
    [to] [relink] [against] [modified] [versions] [of] [the] [library].

    [It] [is] [also] [appreciated] [if] [you] [mention] [in] [the] [README] [or] [CREDITS] [the] [use] [of]
    [this] [library].

    An independent module is a module which is not derived from or based on
    this library.  If you modify this library, you may extend this exception
    to your version of the library, but you are not obligated to do so.
    If you do not wish to do so, delete this exception statement from your version.

[DennisClark]

new license exception LicenseRef-scancode-libroxml-exception-lgpl-2.1 created in DejaCode enterprise and public. Copyleft Limited.

@AyanSinhaMahapatra please synchronize when you have time, thanks.