hg: jdk7u/jdk7u-dev/jdk: 6879539: enable empty password support for pkcs12 keystore

[weijun.wang at oracle.com]

Changeset: 43ccab247d67
Author:    weijun
Date:      2012-02-07 20:13 +0800
URL:       http://hg.openjdk.java.net/jdk7u/jdk7u-dev/jdk/rev/43ccab247d67

6879539: enable empty password support for pkcs12 keystore
Reviewed-by: vinnie, weijun
Contributed-by: Florian Weimer <fweimer at bfk.de>

! src/share/classes/com/sun/crypto/provider/PBEKey.java
! src/share/classes/com/sun/crypto/provider/PKCS12PBECipherCore.java
! src/share/classes/sun/security/pkcs12/PKCS12KeyStore.java
+ test/sun/security/pkcs12/Bug6415637.java