allow freeing steps from a specific profile

stepmania/src/GameState.cpp

@@ -185,7 +185,7 @@ void GameState::Reset()
 	FOREACH_PlayerNumber( pn )
 		PROFILEMAN->UnloadProfile( pn );
 
-	SONGMAN->FreeAllLoadedFromProfiles();
+	SONGMAN->FreeAllLoadedFromProfile();
 	SONGMAN->UpdateBest();
 	SONGMAN->UpdateShuffled();
 
@@ -385,7 +385,7 @@ void GameState::EndGame()
 //	MEMCARDMAN->FlushAndReset();
 	CHECKPOINT;
 
-	SONGMAN->FreeAllLoadedFromProfiles();
+	SONGMAN->FreeAllLoadedFromProfile();
 
 	// make sure we don't execute EndGame twice.
 	m_timeGameStarted.SetZero();

stepmania/src/SongManager.cpp

@@ -1214,12 +1214,12 @@ void SongManager::LoadEditsFromDir( const CString &sDir, ProfileSlot slot )
 	}
 }
 
-void SongManager::FreeAllLoadedFromProfiles()
+void SongManager::FreeAllLoadedFromProfile( ProfileSlot slot )
 {
 	for( unsigned s=0; s<m_pSongs.size(); s++ )
 	{
 		Song* pSong = m_pSongs[s];
-		pSong->FreeAllLoadedFromProfile();
+		pSong->FreeAllLoadedFromProfile( slot );
 	}
 
 	// After freeing some Steps pointers, the cache will be invalid.

stepmania/src/SongManager.h

@@ -37,7 +37,7 @@ public:
 	void LoadAllFromProfile( ProfileSlot s );	// songs, edits
 	void LoadEditsFromDir( const CString &sDir, ProfileSlot slot );
 	int GetNumStepsLoadedFromProfile();
-	void FreeAllLoadedFromProfiles();
+	void FreeAllLoadedFromProfile( ProfileSlot slot = PROFILE_SLOT_INVALID );
 
 	void LoadGroupSymLinks( CString sDir, CString sGroupFolder );