LICENSE.txt: Added license info for 3rd party code and removed licenses for items that have been deleted from the Support folder
diff --git a/LICENSE.txt b/LICENSE.txt
index 4ff2c6a..254fa95 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -485,53 +485,6 @@
 
 ========
 
-The code in 
-src/Lucene.Net/Support/C5.Suppport.cs
-src/Lucene.Net/Support/TreeDictionary.cs
-src/Lucene.Net/Support/TreeSet.cs
-src/Lucene.Net.Tests/Support/C5
-src/Lucene.Net.Tests/Support/TestTreeDictionary.cs
-src/Lucene.Net.Tests/Support/TestTreeSet.cs
-falls under the following license:
-
- Copyright (c) 2003-2016 Niels Kokholm, Peter Sestoft, and Rasmus Lystrøm
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
- 
- The above copyright notice and this permission notice shall be included in
- all copies or substantial portions of the Software.
- 
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- SOFTWARE.
- 
-========
-
-The code in src/Lucene.Net/Support/LurchTable.cs falls under the following license:
-
-Copyright 2012-2014 by Roger Knapp, Licensed under the Apache License, Version 2.0
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-   http://www.apache.org/licenses/LICENSE-2.0
- 
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-
-========
-
 Some code in src/Lucene.Net/Support/LimitedConcurrencyLevelTaskScheduler.cs 
 was derived from the MSDN web site and falls under the following license:
 
@@ -585,32 +538,6 @@
 
 ========
 
-Some code in src/Lucene.Net/Support/LinkedHashMap.cs falls under the following license:
-
-The MIT License (MIT)
-
-Copyright (c) 2014 matarillo
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-
-========
-
 Some code in src/Lucene.Net.Analysis.Stempel/Egothor.Stemmer and 
 src/Lucene.Net.Tests.Analysis.Stempel/Egothor.Stemmer falls
 under the following license
@@ -718,7 +645,7 @@
 
 ---
 
-The code in build/psake/ falls under the following license:
+The code in .build/psake/ falls under the following license:
 
 psake
 Copyright (c) 2012-13 James Kovacs, Damian Hickey and Contributors
@@ -744,6 +671,7 @@
 ---
 
 src/Lucene.Net/Support/Compatibility/NullableAttributes.cs
+src/Lucene.Net/Support/DateTimeOffsetUtil.cs
 falls under the following license
 
 The MIT License (MIT)
@@ -766,4 +694,58 @@
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
\ No newline at end of file
+SOFTWARE.
+
+---
+
+Some code in src/Lucene.Net/Support/ConcurrentHashSet.cs falls under the following license:
+
+MIT License
+
+Copyright (c) 2019 Bar Arnon
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+---
+
+Some code in
+src/Lucene.Net.TestFramework/Support/Util/DefaultNamespaceTypeWrapper.cs
+src/Lucene.Net.TestFramework/Support/Util/LuceneTestCase.TestFixtureAttribute.cs
+src/Lucene.Net.TestFramework/Support/Util/NUnitTestFixtureBuilder.cs
+falls under the following license:
+
+// Copyright (c) 2021 Charlie Poole, Rob Prouse
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
\ No newline at end of file