Take fades into consideration when splitting regions.

Also, fix journalling bug in region splitting.

Timeline/Audio_Region.C

@@ -678,16 +678,25 @@ Audio_Region::handle ( int m )
                 {
                     Loggable::block_start();
 
+                    nframes_t old_fade_in = _fade_in.length;
+                    _fade_in.length = 256;
+
                     Audio_Region *copy = new Audio_Region( *this );
 
+                    _fade_in.length = old_fade_in;
+
                     trim( RIGHT, X );
                     copy->trim( LEFT, X );
 
+                    _fade_out.length = 256;
+
                     sequence()->add( copy );
 
                     log_end();
 
                     Loggable::block_end();
+
+                    log_start();
                 }
 
                 return 0;

Timeline/Loggable.C

@@ -601,6 +601,8 @@ Loggable::log_start ( void )
 void
 Loggable::log_end ( void )
 {
+    ASSERT( _old_state, "Programming error: log_end() called before log_start()" );
+
     if ( --_nest > 0 )
         return;
 
@@ -617,11 +619,8 @@ Loggable::log_end ( void )
         log_print( _old_state, new_state );
     }
 
-    if ( new_state )
-        delete new_state;
-
-    if ( _old_state )
-        delete _old_state;
+    delete new_state;
+    delete _old_state;
 
     _old_state = NULL;