MSCAPI test leaves too many entries in keystore

It seems that MSCAPI related tests leave too many entries in keystore, thus may cause mscapi/keytool/keystore related tests runs very slow.

One example: sun/security/mscapi/AccessKeyStore.java

It normally should take less than 2 seconds, but at the box on which many runs have been done, it took 36 seconds. From the .jtr, there are too much keystore entries:

----------System.out:(3394/85623)----------
SunMSCAPI provider classname is sun.security.mscapi.SunMSCAPI
[0]
    anything (1960) [key-entry]

...

-------------------------------------------------
[12215]
    anything (576) [key-entry]

(while for the machine at which test just took less than 2 seconds to complete, the last key-entry is [49])