improve data on author_handle.json files

Updated URLs, Email addresses, GitHub handles,
Mastodon handles, and locations of various IOCCC winning authors.

author/Carl_Shapiro.json

@@ -4,8 +4,8 @@
     "author_handle" : "Carl_Shapiro",
     "full_name" : "Carl Shapiro",
     "sort_word" : "shapiro",
-    "location_code" : null,
-    "location_name" : null,
+    "location_code" : "US",
+    "location_name" : "United States of America",
     "email" : "carl@lasvegassun.com",
     "url" : null,
     "alt_url" : null,