add innodb_file_per_table option by default

mysql has one innodb file per default and this can become very
huge, which can trigger various issues [1]. So in general it
is recommended to set the innodb_file_per_table option [2].

[1] http://forums.mysql.com/read.php?35,121880,121886
[2] http://dev.mysql.com/doc/refman/5.0/en/innodb-multiple-tablespaces.html

files/config/my.cnf.CentOS

@@ -47,6 +47,8 @@ thread_cache_size = 4
 # set it too high.
 innodb_buffer_pool_size = 50MB
 
+innodb_file_per_table
+
 query_cache_limit=5M
 
 [mysql.server]

files/config/my.cnf.Debian

@@ -98,6 +98,9 @@ skip-bdb
 # Read the manual for more InnoDB related options. There are many!
 # You might want to disable InnoDB to shrink the mysqld process by circa 100MB.
 #skip-innodb
+
+innodb_file_per_table
+
 #
 # * Security Features
 #

files/config/my.cnf.Gentoo

@@ -124,6 +124,8 @@ set-variable = innodb_log_files_in_group=2
 innodb_flush_log_at_trx_commit = 1
 innodb_lock_wait_timeout = 50
 
+innodb_file_per_table
+
 [mysqldump]
 quick
 max_allowed_packet 			= 16M