Update version and release date.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@10326 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

general.ent

@@ -1,5 +1,5 @@
-<!ENTITY version         "SVN-20130815">
-<!ENTITY releasedate     "August 15, 2013">
+<!ENTITY version         "SVN-20130821">
+<!ENTITY releasedate     "August 21, 2013">
 <!ENTITY copyrightdate   "1999-2013"><!-- jhalfs needs a literal dash, not &ndash; -->
 <!ENTITY milestone       "7.4">
 <!ENTITY generic-version "development"> <!-- Use "development", "testing", or "x.y[-pre{x}]" -->