[mysql] Update MySQL version from 5.1 to 5.5 in CentOS 6.2

I tried to update MySQL from 5.1 to 5.5 in CentOS 6.2. The following is the process I did:

1. rpm -Uvh http://repo.webtatic.com/yum/centos/5/latest.rpm
2. yum install libmysqlclient15 --enablerepo=webtatic
3. yum remove mysql mysql-*
4. yum install mysql55 mysql55-server --enablerepo=webtatic

When I tried the 4th step, I got the following output:

[root@d2005 /]# yum install mysql55 mysql55-server --enablerepo=webtatic
Failed to set locale, defaulting to C
Loaded plugins: fastestmirror, presto
Loading mirror speeds from cached hostfile
 * base: yum.singlehop.com
 * extras: centos.mirrors.tds.net
 * updates: pubmirrors.reflected.net
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package mysql55.x86_64 0:5.5.10-1.w5 will be installed
--> Processing Dependency: mysql55-libs = 5.5.10-1.w5 for package: mysql55-5.5.10-1.w5.x86_64
---> Package mysql55-server.x86_64 0:5.5.10-1.w5 will be installed
--> Processing Dependency: perl-DBD-MySQL for package: mysql55-server-5.5.10-1.w5.x86_64
--> Running transaction check
---> Package mysql55-libs.x86_64 0:5.5.10-1.w5 will be installed
---> Package perl-DBD-MySQL.x86_64 0:4.013-3.el6 will be installed
--> Processing Dependency: libmysqlclient.so.16(libmysqlclient_16)(64bit) for package: perl-DBD-MySQL-4.013-3.el6.x86_64
--> Processing Dependency: libmysqlclient.so.16()(64bit) for package: perl-DBD-MySQL-4.013-3.el6.x86_64
--> Running transaction check
---> Package mysql-libs.x86_64 0:5.1.61-1.el6_2.1 will be installed
--> Processing Conflict: mysql55-libs-5.5.10-1.w5.x86_64 conflicts mysql-libs < 5.5.10
--> Finished Dependency Resolution
Error: mysql55-libs conflicts with mysql-libs
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest

How to fix it?