lib/mbsalign: correct license header from GPLv[23] to LGPLv2+

* lib/mbsalign.c: s/GPLv3/LGPLv2+/
* include/mbsalign.h: s/GPLv2/LGPLv2+/
* README.licensing: Remove mention GPLv3 as it's not actually used.

Author: pixelb

README.licensing

@@ -2,8 +2,6 @@
 The project util-linux doesn't use the same license for all of the code.
 There is code under:
 
-   * GPLv3+ (GNU General Public License version 3, or any later version)
-
    * GPLv2+ (GNU General Public License version 2, or any later version)
 
    * GPLv2 (GNU General Public License version 2)

include/mbsalign.h

@@ -2,8 +2,8 @@
    Copyright (C) 2009-2010 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation, either version 2 of the License, or
+   it under the terms of the GNU Lesser General Public License as published by
+   the Free Software Foundation, either version 2.1 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,

lib/mbsalign.c

@@ -2,8 +2,8 @@
    Copyright (C) 2009-2010 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation, either version 3 of the License, or
+   it under the terms of the GNU Lesser General Public License as published by
+   the Free Software Foundation, either version 2.1 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,