Move the code to get Identity provider interfaces to its own platform independent module.

auth_token/server/AuthTokenValidate/internal.h

@@ -86,7 +86,7 @@ void
 ConfigIfUninit(void);
 
 //
-// Functions exported by platform.c
+// Functions exported by identoken.c
 // 
 
 extern
@@ -95,6 +95,10 @@ GetIdenTokenProviderInterface(
    IN       const char           *pIdenTokenTypeName,
    INOUT    IdenTokenProviderIf  **ppIdenTokenProviderIf);
 
+//
+// Functions exported by platform.c
+// 
+
 extern
 HANDLE
 PlatAllocMutex(void);
@@ -111,6 +115,22 @@ extern
 void
 PlatReleaseMutex(HANDLE hMutex);
 
+extern
+LIB_HANDLE
+OpenLibrary(
+   IN    char *pFileName);
+
+extern
+void
+CloseLibrary(
+   IN    LIB_HANDLE libHandle);
+
+extern
+void*
+GetFunctionPtr(
+   IN    LIB_HANDLE libHandle,
+   IN    char *pFunctionName);
+
 //
 // Functions exported by principal.c
 //