alsa-plugins: fix support for PKG_BUILD_DEPENDS_TARGET and PKG_BUILD_DEPENDS_HOST

Signed-off-by: Stephan Raue <stephan@openelec.tv>
pulseaudio: fix support for PKG_BUILD_DEPENDS_TARGET and PKG_BUILD_DEPENDS_HOST

Signed-off-by: Stephan Raue <stephan@openelec.tv>
tinyxml2: fix support for PKG_BUILD_DEPENDS_TARGET and PKG_BUILD_DEPENDS_HOST

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xerces-c: convert to new package scheme

Signed-off-by: Stephan Raue <stephan@openelec.tv>
expat: convert to new package scheme, try #2

Signed-off-by: Stephan Raue <stephan@openelec.tv>
freetype: convert to new package scheme

Signed-off-by: Stephan Raue <stephan@openelec.tv>