Added two new Lua bindings to Song.

GetSampleStart()
  GetSampleLength()

Docs/Changelog_sm5.txt

@@ -8,6 +8,11 @@ ________________________________________________________________________________
 StepMania 5.0 $next | 2011????
 --------------------------------------------------------------------------------
 
+2011/09/18
+----------
+* [Song] Added GetSampleStart() and GetSampleLength()
+  Lua bindings. [Wolfman2000]
+
 2011/09/16
 ----------
 * [UnlockManager] Added GetNumLockedSongs() Lua binding. [Wolfman2000]

Docs/Luadoc/Lua.xml

@@ -1279,6 +1279,8 @@
 			<Function name='GetMusicPath'/>
 			<Function name='GetOneSteps'/>
 			<Function name='GetOrigin'/>
+			<Function name='GetSampleLength'/>
+			<Function name='GetSampleStart'/>
 			<Function name='GetSongDir'/>
 			<Function name='GetSongFilePath'/>
 			<Function name='GetStepsByStepsType'/>

Docs/Luadoc/LuaDocumentation.xml

@@ -3364,6 +3364,12 @@
 	<Function name='GetOrigin' return='string' arguments=''>
 		Gets the Song's origin.
 	</Function>
+	<Function name='GetSampleLength' return='float' arguments=''>
+		Gets the length of a song's sample time in seconds.
+	</Function>
+	<Function name='GetSampleStart' return='float' arguments=''>
+		Gets the starting position of a song sample in seconds.
+	</Function>
 	<Function name='GetSongDir' return='string' arguments=''>
 		Returns the song's directory.
 	</Function>

src/Song.cpp

@@ -1761,6 +1761,16 @@ public:
 		lua_pushnumber(L, p->m_fMusicLengthSeconds);
 		return 1;
 	}
+	static int GetSampleStart( T* p, lua_State *L )
+	{
+		lua_pushnumber(L, p->m_fMusicSampleStartSeconds);
+		return 1;
+	}
+	static int GetSampleLength( T* p, lua_State *L )
+	{
+		lua_pushnumber(L, p->m_fMusicSampleLengthSeconds);
+		return 1;
+	}
 	static int IsLong( T* p, lua_State *L )	
 	{
 		lua_pushboolean(L, p->IsLong());
@@ -1926,6 +1936,8 @@ public:
 		ADD_METHOD( IsEnabled );
 		ADD_METHOD( GetGroupName );
 		ADD_METHOD( MusicLengthSeconds );
+		ADD_METHOD( GetSampleStart );
+		ADD_METHOD( GetSampleLength );
 		ADD_METHOD( IsLong );
 		ADD_METHOD( IsMarathon );
 		ADD_METHOD( HasStepsType );