XBMC AE Latest build - Fix HDMI passthrough

### Command used to build all tests:

./bootstrap && ./configure --enable-ffmpeg-libvorbis --disable-pulse && make -j4


### Audio Settings for all tests:

    <audiooutput>
        <ac3passthrough>true</ac3passthrough>
        <audiodevice>custom</audiodevice>
        <channellayout>10</channellayout>
        <customdevice>hdmi:NVidia</customdevice>
        <custompassthrough>hdmi:NVidia</custompassthrough>
        <dontnormalizelevels>false</dontnormalizelevels>
        <dtshdpassthrough>true</dtshdpassthrough>
        <dtspassthrough>true</dtspassthrough>
        <guisoundwhileplayback>true</guisoundwhileplayback>
        <mode>2</mode>
        <multichannellpcm>true</multichannellpcm>
        <passthroughaac>true</passthroughaac>
        <passthroughdevice>custom</passthroughdevice>
        <passthroughmp1>true</passthroughmp1>
        <passthroughmp2>true</passthroughmp2>
        <passthroughmp3>true</passthroughmp3>
        <truehdpassthrough>true</truehdpassthrough>
    </audiooutput>


### Results:


	*** Latest build:

	On opening - fails to pass correct custom device name:

		INFO: CAESinkALSA::Initialize - Attempting to open device plug:hdmi
		ERROR: CAESinkALSA::Initialize - snd_pcm_open_lconf(-2) - plug:hdmi
		ERROR: CAESinkOSS::Initialize - Failed to get supported formats, assuming AFMT_S16_NE
		INFO: CSoftAE::Initialize - NULL Initialized:
		INFO:   Output Device : NULL
		INFO:   Sample Rate   : 44100
		INFO:   Sample Format : AE_FMT_FLOAT
		INFO:   Channel Count : 8
		INFO:   Channel Layout: FL,FR,FC,BL,BR,SL,SR,LFE
		INFO:   Frames        : 4410
		INFO:   Frame Samples : 35280
		INFO:   Frame Size    : 32
		DEBUG: CSoftAE::Initialize - Using speaker layout: 7.1



### Regression testing:

	*** Merge pull request #17 from DDDamian/DDDamianAE on the 29/1/2012:

	Doesn't build


	*** [AE] replaced CAEUtil::SoftClamp with approx tanh implementation on the 29/1/2012:

	Same as latest build:

		ERROR: CAESinkALSA::Initialize - snd_pcm_open_lconf(-2) - plug:hdmi
		ERROR: CAESinkOSS::Initialize - Failed to get supported formats, assuming AFMT_S16_NE


	*** [AE][ALSA] added suspend/resume support on 28/1/2012

	Same as latest build:

		ERROR: CAESinkALSA::Initialize - snd_pcm_open_lconf(-2) - plug:hdmi
		ERROR: CAESinkOSS::Initialize - Failed to get supported formats, assuming AFMT_S16_NE


	*** [AE][SoftAE] fixed alsa wait timeout on 28/1/2012:

	Navigation sounds are sporadic at best maybe hear 1 in 30?
	No Navigation sounds during playback to be expected without pulse?

	On openning XBMC - Correct device is selected:

		INFO: CAESinkALSA::Initialize - Attempting to open device hdmi:NVidia
		INFO: CAESinkALSA::InitializeHW - Your hardware does not support AE_FMT_FLOAT, trying other formats
		INFO: CAESinkALSA::InitializeHW - Using data format AE_FMT_S32NE
		DEBUG: CAESinkALSA::InitializeHW - Setting timeout to 0 ms
		INFO: CSoftAE::Initialize - ALSA Initialized:
		INFO:   Output Device : hdmi:NVidia
		INFO:   Sample Rate   : 44100
		INFO:   Sample Format : AE_FMT_S32NE
		INFO:   Channel Count : 2
		INFO:   Channel Layout: FL,FR
		INFO:   Frames        : 22
		INFO:   Frame Samples : 44
		INFO:   Frame Size    : 8
		DEBUG: CSoftAE::Initialize - Using speaker layout: 7.1

	On playback correct device and AES settings applied:

		INFO: CAESinkALSA::Initialize - Attempting to open device hdmi:NVidia,AES0=0x06,AES1=0x82,AES2=0x00,AES3=0x02
		NOTICE: Using GL_TEXTURE_2D
		NOTICE: GL: Using VDPAU render method
		NOTICE: GL: NPOT texture support detected
		NOTICE: GL: Using GL_ARB_pixel_buffer_object
		DEBUG: GL: Disabling non-linear stretch
		DEBUG: CDVDPlayer::HandleMessages - player started 2
		DEBUG: ------ Window Deinit (DialogBusy.xml) ------
		DEBUG: CAESinkALSA::InitializeHW - Setting timeout to 0 ms
		INFO: CSoftAE::Initialize - ALSA Initialized:
		INFO:   Output Device : hdmi:NVidia,AES0=0x06,AES1=0x82,AES2=0x00,AES3=0x02
		INFO:   Sample Rate   : 48000
		INFO:   Sample Format : AE_FMT_S16NE
		INFO:   Channel Count : 2
		INFO:   Channel Layout: FL,FR
		INFO:   Frames        : 48
		INFO:   Frame Samples : 96
		INFO:   Frame Size    : 4
		DEBUG: CDVDPlayerAudio:: synctype set to 0: clock feedback
		DEBUG: CSoftAEStream::GetFrame - Underrun


	*** [SoftAE] added new profiler sink on 28/1/2012:

	Working as above


	*** [AE][ALSA] fixed conversion of periods to frames, periods are already in frames on 28/1/2012

	Start of the failure with incorrect device being selected:

		INFO: CAESinkALSA::Initialize - Attempting to open device plug:hdmi
		ERROR: CAESinkALSA::Initialize - snd_pcm_open_lconf(-2) - plug:hdmi

### Changes:

	git difftool test7 test5

	2 files changed but obvious pointer is:

	xbmc/cores/AudioEngine/Sinks/AESinkALSA.cpp on this commit

		  if (device != "default" && !SoundDeviceExists(device))
		    device = "default";


### Apply & Testing Changes

Applying patch to latest build:

--- /usr/src/media/XBMC_AE/xbmc/cores/AudioEngine/Sinks/AESinkALSA.cpp
@@ -100,9 +100,6 @@
   else
     cardName.Empty();

-  if (device != "default" && !SoundDeviceExists(device))
-    device = "default";
-
   if (AE_IS_RAW(format.m_dataFormat) || passthrough)
   {
     if (device == "default")


### Results etc

* Working with custom device name as it should
* Navigation sounds working
* No nav sounds during playback (as i think, to be expected without pulse)

Sweetas!