Settings specific for MariaDB specific are defined in appropriate section in
/etc/my.cnf.d/server.cnf (part of mariadb-server).
It doesn't matter that we set these settings only for [mysqld] here,
because they will be read and used in mysqld_safe as well.
Settings in my.cnf are generic for all MySQL implementations because of
conflict issues.
RHBZ#1003115

diff -up mariadb-10.0.10/support-files/rpm/server.cnf.p13 mariadb-10.0.10/support-files/rpm/server.cnf
--- mariadb-10.0.10/support-files/rpm/server.cnf.p13	2014-04-07 20:12:54.260193809 +0200
+++ mariadb-10.0.10/support-files/rpm/server.cnf	2014-04-07 20:12:24.758256491 +0200
@@ -18,6 +18,8 @@
 # If you use the same .cnf file for MySQL and MariaDB,
 # you can put MariaDB-only options here
 [mariadb]
+log-error=/var/log/mariadb/mariadb.log
+pid-file=/var/run/mariadb/mariadb.pid
 
 # This group is only read by MariaDB-10.0 servers.
 # If you use the same .cnf file for MariaDB of different versions,