Add load support for Nikon D4 and Samsung NX-200 (latter requires code update).
Add load support for Nikon D4 and Samsung NX-200 (latter requires code update).

git-svn-id: 04e88ac4940b0408b73cd6f458a224a262abaaff@411 ec705bc8-faf6-4f9b-9aff-b4916e9bedc3

jbuchbinder/rawspeed,jbuchbinder/rawspeed