Revert "lowmemorykiller: Some additional updates from 3.4 kernel"

This reverts commit 6ecd221cde5a8bfe08b2323fab773a9572171bc5.
Revert "Revert "lowmemorykiller: Voku and Dorimanx tweaks for LMK""

This reverts commit 70083ab1ead66200f5c8ad231b37f4ec33b65e26.
Revert "reset LMK to add addition from 3.4"

This reverts commit 854920634722c779cb11d81e83f9223883ebc5c1.