Proposed patch to add them to deletion upon installation.

patch (text/plain), 399 bytes, created by Octave Berry on 2012-11-28 22:40:02 UTC

--- mysql-connector-c++-1.1.1.ebuild.orig	2012-11-28 22:30:36.905272517 +0100
+++ mysql-connector-c++-1.1.1.ebuild	2012-11-28 22:30:56.188274810 +0100
@@ -52,7 +52,7 @@
 	fi
 
 	# docs are installed poorly
-	rm -rf "${ED}"/usr/{ANNOUNCEMENT,COPYING,README}
+	rm -rf "${ED}"/usr/{ANNOUNCEMENT,COPYING,README,INSTALL,Licenses_for_Third-Party_Components.txt}
 	dodoc ANNOUNCEMENT README
 
 	# examples