handle user@corp.net username correctly
Merge pull request #2040 from dpoe/stable-1.1

handle user@corp.net username correctly
Get rid of winpr/config.h

winpr/config.h just contains WITH_NATIVE_SSPI which is already
defined in top level config.h.
Merge pull request #2061 from bmiklautz/remove_winpr_configh

Get rid of winpr/config.h