Adjust License tag per spot's recommendation

mysql.spec

@@ -2,9 +2,11 @@ Name: mysql
 Version: 5.0.45
 Release: 2%{?dist}
 Summary: MySQL client programs and shared libraries
-License: GPLv2
 Group: Applications/Databases
 URL: http://www.mysql.com
+# exceptions allow client libraries to be linked with most open source SW,
+# not only GPL code.
+License: GPLv2 with exceptions
 
 # Regression tests take a long time, you can skip 'em with this
 %{!?runselftest:%define runselftest 1}