Restore licensing for embedded libical

diff --git a/src/plugins/vcalendar/libical/LICENSE b/src/plugins/vcalendar/libical/LICENSE
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+++ b/src/plugins/vcalendar/libical/LICENSE
@@ -0,0 +1,28 @@
+libical is distributed under two licenses.
+You may choose the terms of either:
+
+ * The Mozilla Public License (MPL) v1.0
+ 
+ or
+ 
+ * The GNU Library General Public License (LGPL) v2.1
+
+----------------------------------------------------------------------
+
+Software distributed under these licenses is distributed on an "AS
+IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+implied. See the License for the specific language governing rights
+and limitations under the License.
+Libical is distributed under both the LGPL and the MPL. The MPL
+notice, reproduced below, covers the use of either of the licenses. 
+
+----------------------------------------------------------------------
+
+IMPORTANT: This is not the complete libical library, just the parts
+required for vCalendar plugin of Claws Mail and further bugfixes.
+For the complete libical package please visit:
+  http://sourceforge.net/projects/freeassociation/
+
+Modifications required for the Claws Mail project are:
+Copyright 1999-2007 Colin Leroy and the Claws Mail team.
+See COPYING file on toplevel directory for details.

diff --git a/src/plugins/vcalendar/libical/README b/src/plugins/vcalendar/libical/README
new file mode 100644 (file)
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+++ b/src/plugins/vcalendar/libical/README
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+LIBICAL -- an implementation of iCalendar protocols and data formats
+
+Most of the code in here was written by Eric Busboom with help from
+dozens of contributors.  It is currently maintained by Art Cancro
+and Wilfried Goesgens.
+
+libical is available for you to use under your choice of the Mozilla
+Public License (MPL) v1.0 or the GNU Library General Public License
+(LGPL) v2.1.
+
+This dual license ensures that the library can be incorporated into
+both proprietary code and GPL'd programs, and will benefit from
+improvements made by programmers in both realms.  We will only accept
+changes into the library if they are similarly dual-licensed.
+
+Portions of this distribution are Copyright (c) 1997 Theo de
+Raadt.  See the header for libical/vsnprintf.c for the full
+copyright statement.
+
+IMPORTANT: This is not the complete libical library, just the parts
+required for vCalendar plugin of Claws Mail and further bugfixes.
+For the complete libical package please visit:
+  http://sourceforge.net/projects/freeassociation/