versioned symbols

[Nicholas Bamber <nicholas@periapt.co.uk>]

Julien,
	The patch was not as bad as I thought.

00022340 g    DF .text	000001b5  libmysqlclient_18 my_connect

http://anonscm.debian.org/viewvc/pkg-mysql/mysql-5.5/branches/unstable/debian/patches/versioned_symbols.patch?view=markup

http://anonscm.debian.org/viewvc/pkg-mysql/mysql-5.5/branches/unstable/debian/rules?r1=2127&r2=2131

http://anonscm.debian.org/viewvc/pkg-mysql/mysql-5.5/branches/unstable/debian/changelog?r1=2128&r2=2131

But I still need to port this into what we have for wheezy/testing/sid 
and it looks like I need some more tweaks for #672359  and possibly a 
Break against amarok (<< 2.5.0-2).