Dirac HD support

Notes for Vanir, significant changed in HeadsetService.java were required... this will need testing.  But rumor has it, dirac sounds much better
PS2: Police brass
PS3: Compiles ready for testing

Set dsp.dirac.enable=true in system props to enable

Set dsp.compression.enable=false to disable compression library

Set TARGET_ENABLE_DIRAC_AUDIO := true in device Boardconfig to build
needed resources and get the audio_effects.conf from external/libdirac

Change-Id: Ibdbfb00757308171393f946033f894c19de79e6c
Signed-off-by: DHOMD <DHO@dho.im>
Conflicts:
	res/values/strings.xml
	src/com/bel/android/dspmanager/service/HeadsetService.java
Add libdirac

This is an adaption of EOS's
https://github.com/TeamEOS/external_libdirac/commit/2cc3110b7b335201010fb1cd27bdbaacd24e000b

Change-Id: I7470533741fa3cd980addca350de07c6eb508c98
Signed-off-by: DHOMD <DHO@dho.im>
Conflicts:
	cyanogen-dsp/Android.mk