Fixed SSPI fallback to NTLM (#7642)

* Fixed SSPI fallback to NTLM

* Fixed wide/ansi mixup

* WITH_GSS fixes

* Move to WinPR as this is not related to FreeRDP
* Add option WITH_GSS_NO_NTLM_FALLBACK to disable NTLM fallback

* Abort NLA if status is SEC_E_NO_CREDENTIALS

* Properly invalidate sspi::SubContext

CMakeLists.txt

@@ -811,23 +811,6 @@ if (WITH_OPENH264 AND NOT OPENH264_FOUND)
 endif()
 set(WITH_OPENH264 ${OPENH264_FOUND})
 
-if ( (WITH_GSSAPI) AND (NOT GSS_FOUND))
-	message(WARNING "-DWITH_GSSAPI=ON is set, but not GSSAPI implementation was found, disabling")
-elseif(WITH_GSSAPI)
-	if(GSS_FLAVOUR STREQUAL "MIT")
-		add_definitions("-DWITH_GSSAPI -DWITH_GSSAPI_MIT")
-		if(GSS_VERSION_1_13)
-			add_definitions("-DHAVE_AT_LEAST_KRB_V1_13")
-		endif()
-		include_directories(${_GSS_INCLUDE_DIR})
-	elseif(GSS_FLAVOUR STREQUAL "Heimdal")
-		add_definitions("-DWITH_GSSAPI -DWITH_GSSAPI_HEIMDAL")
-		include_directories(${_GSS_INCLUDE_DIR})
-	else()
-		message(WARNING "Kerberos version not detected")
-	endif()
-endif()
-
 if(TARGET_ARCH MATCHES "x86|x64")
 	if (NOT APPLE)
 		# Intel Performance Primitives