lzo: convert to new package scheme

Signed-off-by: Stephan Raue <stephan@openelec.tv>
bzip2: convert to new package scheme

Signed-off-by: Stephan Raue <stephan@openelec.tv>
flac: fix build if build with sourcedir != builddir

Signed-off-by: Stephan Raue <stephan@openelec.tv>
glib: depends on package 'libffi-host'

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

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

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