Copyright for wyhash source package in Oracular

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: wyhash
Upstream-Contact: 王一 WangYi 
Source: https://github.com/wangyi-fudan/wyhash

Files: *
Copyright: public domain
License: Unlicense

Files: debian/*
Copyright: 2020 Google LLC
License: Apache-2.0

License: Apache-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
 .
     https://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.
 .
 On Debian systems, the complete text of the Apache License, Version 2.0, can be
 found in "/usr/share/common-licenses/Apache-2.0".

License: Unlicense
 This is free and unencumbered software released into the public domain.
 .
 Anyone is free to copy, modify, publish, use, compile, sell, or distribute this
 software, either in source code form or as a compiled binary, for any purpose,
 commercial or non-commercial, and by any means.
 .
 In jurisdictions that recognize copyright laws, the author or authors of this
 software dedicate any and all copyright interest in the software to the public
 domain. We make this dedication for the benefit of the public at large and to
 the detriment of our heirs and successors. We intend this dedication to be an
 overt act of relinquishment in perpetuity of all present and future rights to
 this software under copyright law.
 .
 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 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.
 .
 For more information, please refer to