processCookieParam only returns last cookie

Problem class: org.apache.cxf.jaxrs.utils.JAXRSUtils

In JAXRSUtils.processCookieParam(), if there are multiple cookies in the header, only the last cookie will be returned when Cookie.valueOf() is called.

This is because the list of all cookies is returned from values.get(0). When Cookie.valueOf() is called, it delegates to CookieHeaderProvider which simply loops through all of the tokenized cookie values and returns the last cookie.