8179889: Fix typographic errors in copyright headers
Reviewed-by: erikj, dholmes

8170648: Move java.net.http package out of Java SE to incubator namespace
Reviewed-by: chegar, dfuchs, michaelm, prappo, skuksenko
Contributed-by: Chris Hegarty <chris.hegarty@oracle.com>, Daniel Fuchs <daniel.fuchs@oracle.com>, Michael McMahon <michael.x.mcmahon@oracle.com>, Pavel Rappo <pavel.rappo@oracle.com>, Sergey Kuksenko <sergey.kuksenko@oracle.com>, anthony.vanelverdinghe@gmail.com

8166285: Missing dependencies java.httpclient for tests from java/net pachage
Reviewed-by: chegar

8163561: Add a test for Proxy Authentication in HTTP/2 Client API
Reviewed-by: chegar
Contributed-by: Felix Yang <felix.yang@oracle.com>