RFR: 8289275: Remove incorrect __declspec(dllimport) attributes from pointers in jdk.crypto.cryptoki

[Valerie Peng]

On Sat, 2 Jul 2022 02:12:15 GMT, Julian Waters <jwaters at openjdk.org> wrote:

> Several instances of function pointers in jdk.crypto.cryptoki are marked with the dllimport attribute, which should only be applied to symbol declarations, of which a typedef'd function pointer is not. This would only be useful if a function pointer defined in the linked dll is desired to be imported, not if the pointer itself is created locally and used to store a function address. In addition to being incorrect, at least on the versions of Visual C++ the JDK supports today, it is also redundant; Typically they are used to avoid an indirect stub that jumps to the proper entry in the import address table, but usage of these typedefs involves loading the address of a function and directly (Usually through GetProcAddress, even in other cases it would simply be set to the address of a function anyway) assigning it to the pointer before immediately dispatching when called, which bypasses this procedure entirely and makes the attribute pointless.

pkcs11.h is a standard header file from OASIS. Best to leave it alone. Just my .02.

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PR: https://git.openjdk.org/jdk/pull/9353