quota: Move quota files into separate directory

Quota subsystem has more and more files. It's time to create a dir for it.

Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/Kconfig b/fs/Kconfig
index 93945dd..cef8b18 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -56,61 +56,7 @@
 
 source "fs/notify/Kconfig"
 
-config QUOTA
-	bool "Quota support"
-	help
-	  If you say Y here, you will be able to set per user limits for disk
-	  usage (also called disk quotas). Currently, it works for the
-	  ext2, ext3, and reiserfs file system. ext3 also supports journalled
-	  quotas for which you don't need to run quotacheck(8) after an unclean
-	  shutdown.
-	  For further details, read the Quota mini-HOWTO, available from
-	  <http://www.tldp.org/docs.html#howto>, or the documentation provided
-	  with the quota tools. Probably the quota support is only useful for
-	  multi user systems. If unsure, say N.
-
-config QUOTA_NETLINK_INTERFACE
-	bool "Report quota messages through netlink interface"
-	depends on QUOTA && NET
-	help
-	  If you say Y here, quota warnings (about exceeding softlimit, reaching
-	  hardlimit, etc.) will be reported through netlink interface. If unsure,
-	  say Y.
-
-config PRINT_QUOTA_WARNING
-	bool "Print quota warnings to console (OBSOLETE)"
-	depends on QUOTA
-	default y
-	help
-	  If you say Y here, quota warnings (about exceeding softlimit, reaching
-	  hardlimit, etc.) will be printed to the process' controlling terminal.
-	  Note that this behavior is currently deprecated and may go away in
-	  future. Please use notification via netlink socket instead.
-
-# Generic support for tree structured quota files. Seleted when needed.
-config QUOTA_TREE
-	 tristate
-
-config QFMT_V1
-	tristate "Old quota format support"
-	depends on QUOTA
-	help
-	  This quota format was (is) used by kernels earlier than 2.4.22. If
-	  you have quota working and you don't want to convert to new quota
-	  format say Y here.
-
-config QFMT_V2
-	tristate "Quota format v2 support"
-	depends on QUOTA
-	select QUOTA_TREE
-	help
-	  This quota format allows using quotas with 32-bit UIDs/GIDs. If you
-	  need this functionality say Y here.
-
-config QUOTACTL
-	bool
-	depends on XFS_QUOTA || QUOTA
-	default y
+source "fs/quota/Kconfig"
 
 source "fs/autofs/Kconfig"
 source "fs/autofs4/Kconfig"