zlib: fix download url

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

Signed-off-by: Stephan Raue <stephan@openelec.tv>
mysql-hosttools: depends on 'zlib:host'

Signed-off-by: Stephan Raue <stephan@openelec.tv>
squashfs: depends on 'zlib:host'

Signed-off-by: Stephan Raue <stephan@openelec.tv>
Python-host: depends on 'zlib:host'

Signed-off-by: Stephan Raue <stephan@openelec.tv>
libpng-host: depends on 'zlib:host'

Signed-off-by: Stephan Raue <stephan@openelec.tv>
libxml2-host: depends on 'zlib:host'

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xbmc: depends on 'lzo:host'

Signed-off-by: Stephan Raue <stephan@openelec.tv>
squashfs: depends on 'lzo:host'

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