RFR [7195480]: javax.smartcardio does not detect cards on Mac OS X

[Ivan Gerasimov]

Hello!

It was reported that CardTerminal.isCardPresent(), 
CardTerminal.waitForCardAbsent(...) and 
CardTerminal.waitForCardPresent(...) do not work correctly on Mac OS X.
It is due to the difference in the types of the fields of 
SCARD_READERSTATE structure used across different platforms.

In addition to the field type correction, it is also needed to make sure 
the fields are aligned correctly.
I made sure that the total size of the structure (61 bytes) is correct 
by requesting information about the same reader twice:
(had to mess with sun.security.smartcardio.PCSC.SCardGetStatusChange() a 
bit to check, but didn't include it the test).

No new tests go with the fix.
The already existing manual test 
jdk/test/sun/security/smartcardio/TestPresent.java can be used to 
demonstrate the bug with the current jdk.
With the fix this test isn't failing.

I assume that the correct behavior in the case of several card readers 
can be checked with 
jdk/test/sun/security/smartcardio/TestMultiplePresent.java, but cannot 
check it myself as I don't currently have access to a mac comp with more 
than one readers.

Would you please help review the fix?

BUGURL: https://bugs.openjdk.java.net/browse/JDK-7195480
WEBREV: http://cr.openjdk.java.net/~igerasim/7195480/0/webrev/

Sincerely yours,
Ivan