Update copyright year

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11497 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

general.ent

@@ -9,7 +9,7 @@
 
 <!ENTITY releasedate     "December 27, 2018">
 
-<!ENTITY copyrightdate   "1999-2018"><!-- jhalfs needs a literal dash, not &ndash; -->
+<!ENTITY copyrightdate   "1999-2019"><!-- jhalfs needs a literal dash, not &ndash; -->
 <!ENTITY milestone       "8.4">
 
 <!ENTITY lfs-root        "http://www.linuxfromscratch.org/">