curl[-native]: update to 7.16.4

diff --git a/packages/curl/curl-native_7.16.2.bb b/packages/curl/curl-native_7.16.4.bb
similarity index 100%
rename from packages/curl/curl-native_7.16.2.bb
rename to packages/curl/curl-native_7.16.4.bb

diff --git a/packages/curl/curl_7.16.2.bb b/packages/curl/curl_7.16.4.bb
similarity index 100%
rename from packages/curl/curl_7.16.2.bb
rename to packages/curl/curl_7.16.4.bb