Adding version information to DroidDoc. Rather than pulling the version from
@since tags in the code, it's pulled from the API XML files also used by
apicheck.

The code now reads the apicheck XML, and applies it's versions to the DroidDoc
class models. The models output the version to HDF, and that's picked up by
the CS templates.

The clearsilver templates will be changed to be pretty in a follow up change.
diff --git a/tools/droiddoc/src/Android.mk b/tools/droiddoc/src/Android.mk
index bf404b7..30270b5 100644
--- a/tools/droiddoc/src/Android.mk
+++ b/tools/droiddoc/src/Android.mk
@@ -47,6 +47,7 @@
 	SampleTagInfo.java \
     Scoped.java \
 	SeeTagInfo.java \
+	SinceTagger.java \
 	Sorter.java \
 	SourcePositionInfo.java \
     Stubs.java \
@@ -57,6 +58,7 @@
 	TypeInfo.java
 
 LOCAL_JAVA_LIBRARIES := \
+	apicheck \
 	clearsilver
 
 LOCAL_CLASSPATH := \