fix dupe texture loads (mostly harmless _blank/_black dupes, but sometimes

more)

stepmania/src/RageTextureID.cpp

@@ -1,6 +1,7 @@
 #include "global.h"
 #include "RageTextureID.h"
 #include "RageTextureManager.h"
+#include "RageUtil.h"
 
 void RageTextureID::Init()
 {
@@ -51,3 +52,8 @@ bool RageTextureID::operator==(const RageTextureID &rhs) const
 		// EQUAL(Policy); // don't do this
 }
 
+void RageTextureID::SetFilename( const CString &fn )
+{
+	filename = fn;
+	CollapsePath( filename );
+}

stepmania/src/RageTextureID.h

@@ -58,7 +58,8 @@ struct RageTextureID
 	void Init();
 
 	RageTextureID() { Init(); }
-	RageTextureID(const CString &fn) { Init(); filename=fn; }
+	RageTextureID( const CString &fn ) { Init(); SetFilename(fn); }
+	void SetFilename( const CString &fn );
 };
 
 #endif