Updated COPYING to include the "The Unlicense" text.

CHANGES

@@ -13,6 +13,9 @@ The following are the changes from calc version 2.14.2.1 to date:
 
     macOS Darwin defaults LCC to "cc".
 
+    Updated COPYING to include the actual text of "The Unlicense".
+    Made minor formatting changes to the file.
+
 
 The following are the changes from calc version 2.14.2.0 to 2.14.2.0:
 

COPYING

@@ -1,6 +1,5 @@
 		calc - arbitrary precision calculator
 
-
 This file is Copyrighted
 ------------------------
 
@@ -76,8 +75,8 @@ Calc's relationship to the GNU Lesser General Public License
     Clearly all files that go into the creation of those binary link
     libraries are covered under the License.
 
-    The ``scripts used to control compilation and installation of the
+    The "scripts used to control compilation and installation of the
-    of the library'' include:
+    of the library" include:
 
 	* Makefiles
 	* source files created by the Makefiles
@@ -85,7 +84,7 @@ Calc's relationship to the GNU Lesser General Public License
 
      All of those files are covered under the License.
 
-     The ``associated interface definition files'' are those files that:
+     The "associated interface definition files" are those files that:
 
 	* show how the calc binary link libraries are used
 	* test the validity of the binary link libraries
@@ -100,9 +99,9 @@ Calc's relationship to the GNU Lesser General Public License
 	* files under the lib sub-directory
 	* the main calc.c file
 
-     The ``complete source code'' includes ALL files shipped with calc,
+     The "complete source code" includes ALL files shipped with calc,
-     except for the exception files explicitly listed in the ``Calc
+     except for the exception files explicitly listed in the "Calc
-     copyrights and exception files'' section below.
+     copyrights and exception files" section below.
 
 -=-
 
@@ -146,9 +145,32 @@ Calc copyrights and exception files
 	    cal/dotest.cal
 	    cal/screen.cal
 
-    For more information on this license, see:
+    "The Unlicense" is as follows:
 
-	    https://unlicense.org
+	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 <http://unlicense.org/>
 
     In all cases one may use and distribute these exception files freely.
     And because one may freely distribute the LGPL covered files, the