Add traceservice test case

Fix ranktable

	modified:   trace/net.sf.milkfish.systrace.android.core.test/META-INF/MANIFEST.MF
	modified:   trace/net.sf.milkfish.systrace.android.core.test/src/net/sf/milkfish/systrace/android/core/test/TestAndroidTrace.java
	modified:   trace/net.sf.milkfish.systrace.core/src/net/sf/milkfish/systrace/core/service/impl/SystraceService.java