MDEV-346: 5.5 upgrade test fails on precise.

Attempt to make it easier to upgrade mysql->mariadb on Ubuntu precise.
It looks like we were missing conflicts: and replaces: on packages
mysql-server-5.5 and mysql-client-5.5.

debian/dist/Debian/control

@@ -124,8 +124,9 @@ Provides: virtual-mysql-client, mysql-client,
     mysql-client-4.1, mysql-client-5.1, mysql-client-5.5
 Conflicts: mysql-client (<< 5.0.51), mysql-client-5.0, mysql-client-5.1,
     mariadb-client (<< ${source:Version}),
-    mariadb-client-5.1, mariadb-client-5.2, mariadb-client-5.3
+    mariadb-client-5.1, mariadb-client-5.2, mariadb-client-5.3, mysql-client-5.5
 Replaces: mysql-client (<< 5.0.51), mysql-client-5.0, mysql-client-5.1,
+    mysql-client-5.5,
     mariadb-client (<< ${source:Version}),
     mariadb-client-5.1, mariadb-client-5.2, mariadb-client-5.3
 Description: MariaDB database client binaries
@@ -185,10 +186,10 @@ Pre-Depends: mariadb-common, adduser (>= 3.40), debconf
 Depends: mariadb-client-5.5 (>= ${source:Version}), libdbi-perl, perl (>= 5.6), ${shlibs:Depends}, ${misc:Depends}, psmisc, passwd, lsb-base (>= 3.0-10), mariadb-server-core-5.5 (>= ${binary:Version})
 Provides: mariadb-server, mysql-server, virtual-mysql-server
 Conflicts: mariadb-server (<< ${source:Version}), mysql-server (<< ${source:Version}),
-    mysql-server-4.1, mysql-server-5.0, mysql-server-5.1,
+    mysql-server-4.1, mysql-server-5.0, mysql-server-5.1, mysql-server-5.5,
     mariadb-server-5.1, mariadb-server-5.2, mariadb-server-5.3
 Replaces: mariadb-server (<< ${source:Version}), mysql-server (<< ${source:Version}),
-    mysql-server-4.1, mysql-server-5.0, mysql-server-5.1,
+    mysql-server-4.1, mysql-server-5.0, mysql-server-5.1, mysql-server-5.5,
     mariadb-server-5.1, mariadb-server-5.2, mariadb-server-5.3,
     libmariadbclient16 (<< 5.3.4),
     libmariadbclient-dev (<< 5.5.0)

debian/dist/Ubuntu/control

@@ -124,8 +124,9 @@ Provides: virtual-mysql-client, mysql-client,
     mysql-client-4.1, mysql-client-5.1, mysql-client-5.5
 Conflicts: mysql-client (<< 5.0.51), mysql-client-5.0, mysql-client-5.1,
     mariadb-client (<< ${source:Version}),
-    mariadb-client-5.1, mariadb-client-5.2, mariadb-client-5.3
+    mariadb-client-5.1, mariadb-client-5.2, mariadb-client-5.3, mysql-client-5.5
 Replaces: mysql-client (<< 5.0.51), mysql-client-5.0, mysql-client-5.1,
+    mysql-client-5.5,
     mariadb-client (<< ${source:Version}),
     mariadb-client-5.1, mariadb-client-5.2, mariadb-client-5.3
 Description: MariaDB database client binaries
@@ -179,10 +180,10 @@ Pre-Depends: mariadb-common, adduser (>= 3.40), debconf
 Depends: mariadb-client-5.5 (>= ${source:Version}), libdbi-perl, perl (>= 5.6), ${shlibs:Depends}, ${misc:Depends}, psmisc, passwd, lsb-base (>= 3.0-10), mariadb-server-core-5.5 (>= ${binary:Version})
 Provides: mariadb-server, mysql-server, virtual-mysql-server
 Conflicts: mariadb-server (<< ${source:Version}), mysql-server (<< ${source:Version}),
-    mysql-server-4.1, mysql-server-5.0, mysql-server-5.1,
+    mysql-server-4.1, mysql-server-5.0, mysql-server-5.1, mysql-server-5.5,
     mariadb-server-5.1, mariadb-server-5.2, mariadb-server-5.3
 Replaces: mariadb-server (<< ${source:Version}), mysql-server (<< ${source:Version}),
-    mysql-server-4.1, mysql-server-5.0, mysql-server-5.1,
+    mysql-server-4.1, mysql-server-5.0, mysql-server-5.1, mysql-server-5.5,
     mariadb-server-5.1, mariadb-server-5.2, mariadb-server-5.3,
     libmariadbclient16 (<< 5.3.4),
     libmariadbclient-dev (<< 5.5.0)