unified "iSCSI" in all comments

add . at the end of lines
fix 2 file header issues and so on

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7256 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/Network/IScsiDxe/IScsiCommon.h

@@ -8,6 +8,7 @@ which accompanies this distribution.  The full text of the license may be found
 http://opensource.org/licenses/bsd-license.php
 
 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 **/