The dependency on lcms is handled via the PACKAGECONFIG option, so
doesn't need to be hardcoded in DEPENDS. Also update HOMEPAGE, add
support for libmng-native and fix typo in PACKAGECONFIG[lcms].
Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>