Import patches-unapplied version 2.58 to ubuntu/precise

Imported using git-ubuntu import.

Changelog parent: 9fa307484f

New changelog entries:
  * Use lowlatency kernel for Ubuntu Studio (LP: #956250).

debian/changelog

@@ -1,3 +1,9 @@
+livecd-rootfs (2.58) precise; urgency=low
+
+  * Use lowlatency kernel for Ubuntu Studio (LP: #956250).
+
+ -- Colin Watson <cjwatson@ubuntu.com>  Thu, 15 Mar 2012 18:08:44 +0000
+
 livecd-rootfs (2.57) precise; urgency=low
 
   * Move ac100-tarball-installer from install set to live set

live-build/auto/config

@@ -172,6 +172,7 @@ case $PROJECT in
 	ubuntustudio-dvd)
 		add_task install ubuntustudio-desktop ubuntustudio-generation ubuntustudio-recording ubuntustudio-font-meta ubuntustudio-graphics ubuntustudio-audio-plugins ubuntustudio-video
 		COMPONENTS='main restricted universe multiverse'
+		KERNEL_FLAVOURS=lowlatency
 		;;
 
 	base)