RFR, 8001579, eliminated compiler warnings in the JDK native security code

[John Zavgren]

Greetings:

Please consider the webrev image (http://cr.openjdk.java.net/~chegar/8001579/webrev.01/) of changes I made to the native JDK security code to eliminate compiler warnings: used macros to convert from integers to pointers and vice versa; initialized data structures; fixed comparisons between integers of different types; etc.

Thanks!
John Zavgren
john.zavgren at oracle.com