[Win32] Add support for options in Winspool notifications API

Adds in the Java mappings for a number of structures required to
allow specifying complex options to `Winspool`s notification APIs.

Shout out to @matthiasblaesing for helping to fix the function
definitions - more info here:
https://groups.google.com/g/jna-users/c/FpWPY2c8bzY

contrib/monitordemo/build.xml

@@ -9,7 +9,7 @@
     <property name="classes"       location="${build}/classes"/>
     <property name="jar"           location="${build}/demo-monitordemo.jar"/>
     <property name="file.reference.jna.jar" location="../../build/jna.jar"/>
-    <property name="main-class"			value="com.sun.jna.contrib.demo.MonitorInfoDemo.java" />
+    <property name="main-class"			value="com.sun.jna.contrib.demo.MonitorInfoDemo" />
 
     <path id="classpath">
         <fileset file="${file.reference.jna.jar}"/>