Update the code to follow UEFI spec, do the discard action when return EFI_BROWSER_ACTION_REQUEST_EXIT.

Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14219 6f19259b-4bc3-4df7-8a09-765794883524
Update the traversal path logic.

Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14220 6f19259b-4bc3-4df7-8a09-765794883524
Correct the location where the HOST software can be downloaded.

Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14221 6f19259b-4bc3-4df7-8a09-765794883524