GalaxyParts: remove dynamic lmk & background process limit options

These options are unnecessary on KitKat

Conflicts:
	prebuilt/bin/galaxyparts
	ramdisk/init.msm7x27.parts.rc

(cherry picked from commit c40f6964cc643500c58692aeceda7ee6a3269102)

Change-Id: Iac5748d15973955bbded8770d815b74a5ceba2f9
GalaxyParts: add 3MB cache setting & cleanup arrays

Change-Id: I0c0f9fb332ba5b4f4aac6291e378e15d8e8a0840
Really use half-res bootanimation

Needs to be defined in common.mk so that vendor/cm can detect it.

(cherry picked from commit 6d02ec5e3fdbcc88508b729226ba90f7fa8de572)

Change-Id: I71d1ebb22ef5e717df81d000685453cbe09a29df
Disable extamp filter by default

Tired of people complaining about low volume and don't know
how to tweak the settings.

Change-Id: Ibfc397781cbb0161cc0c25e78d4b1b321acd3fff