Add the Steps::UsesSplitTiming binding.

Hope this worked right.

Docs/Changelog_sm5.txt

@@ -8,6 +8,10 @@ ________________________________________________________________________________
 StepMania 5.0 $NEXT | 20110xyy
 --------------------------------------------------------------------------------
 
+2011/05/23
+----------
+* [Steps] Added the UsesSplitTiming Lua binding. [Wolfman2000]
+
 2011/05/20
 ----------
 * [CryptManager] Added SHA1File Lua binding. [AJ]

Docs/Luadoc/Lua.xml

@@ -1374,6 +1374,7 @@
 			<Function name='IsAPlayerEdit'/>
 			<Function name='IsAnEdit'/>
 			<Function name='IsAutogen'/>
+			<Function name='UsesSplitTiming'/>
 		</Class>
 		<Class base='ActorFrame' name='StepsDisplay'>
 			<Function name='Load'/>

Docs/Luadoc/LuaDocumentation.xml

@@ -3454,6 +3454,9 @@
 	<Function name='IsAutogen' return='bool' arguments=''>
 		Returns <code>true</code> if the steps were automatically generated.
 	</Function>
+	<Function name='UsesSplitTiming' return='bool' sm-ssc='true' arguments=''>
+		Returns <code>true</code> if the Steps use different <code>TimingData</code> from the Song.
+	</Function>
 </Class>
 <Class name='StepsDisplay'>
 	<Function name='Load' return='void' arguments='string sMetricsGroup'>