Add pagetable util class

	modified:   trace/net.sf.milkfish.systrace.android.core/META-INF/MANIFEST.MF
	modified:   trace/net.sf.milkfish.systrace.android.core/src/net/sf/milkfish/systrace/android/core/AndroidTrace.java
	new file:   trace/net.sf.milkfish.systrace.android.core/src/net/sf/milkfish/systrace/android/core/util/PageTableHelper.java
	deleted:    trace/net.sf.milkfish.systrace.core/src/net/sf/milkfish/systrace/core/ModelAddon.java
	modified:   trace/net.sf.milkfish.systrace.core/src/net/sf/milkfish/systrace/core/pipe/impl/TracePipe.java
Add pagetable implementation

	modified:   trace/net.sf.milkfish.systrace.android.core/src/net/sf/milkfish/systrace/android/core/AndroidTrace.java
	modified:   trace/net.sf.milkfish.systrace.android.core/src/net/sf/milkfish/systrace/android/core/util/PageTableHelper.java