RFR 8192988: keytool should support -storepasswd for pkcs12 keystores

[Weijun Wang]

Hi All

Please take a look at

   http://cr.openjdk.java.net/~weijun/8192988/webrev.00/

With this fix, "keytool -storepasswd" and "keytool -importkeystore" on a PKCS12 
keystore will change the keypass as well with the storepass.

Thanks
Max