Added create-md5 target in build.xml.  Will be useful when creating artifacts on the build server.
Added create-md5 target in build.xml.  Will be useful when creating artifacts on the build server.

shyamalschandra/flex-sdk,adufilie/flex-sdk,danteinforno/flex-sdk,shyamalschandra/flex-sdk,adufilie/flex-sdk,danteinforno/flex-sdk,danteinforno/flex-sdk,apache/flex-sdk,shyamalschandra/flex-sdk,apache/flex-sdk,danteinforno/flex-sdk,apache/flex-sdk,apache/flex-sdk,adufilie/flex-sdk,SlavaRa/flex-sdk,SlavaRa/flex-sdk,shyamalschandra/flex-sdk,apache/flex-sdk,adufilie/flex-sdk,adufilie/flex-sdk,danteinforno/flex-sdk,adufilie/flex-sdk,SlavaRa/flex-sdk,SlavaRa/flex-sdk,apache/flex-sdk,shyamalschandra/flex-sdk,SlavaRa/flex-sdk,SlavaRa/flex-sdk,danteinforno/flex-sdk,shyamalschandra/flex-sdk