macosx: Don't do fancy stuff on 10.4.

Should fix the ppc crash.

Cherry-picked from fcf7831c917acc2eff0bb20fb622839e22282699

modules/gui/macosx/embeddedwindow.m

@@ -41,6 +41,18 @@
 
 @implementation VLCEmbeddedWindow
 
+- (id)initWithContentRect:(NSRect)contentRect styleMask:(unsigned int)windowStyle backing:(NSBackingStoreType)bufferingType defer:(BOOL)deferCreation
+{
+    if(MACOS_VERSION < 10.5f)
+        return [super initWithContentRect:contentRect styleMask:windowStyle backing:bufferingType defer:deferCreation];
+
+    windowStyle ^= NSTexturedBackgroundWindowMask;
+    self = [super initWithContentRect:contentRect styleMask:windowStyle backing:bufferingType defer:deferCreation];
+    [self setContentBorderThickness:32.0 forEdge:NSMinYEdge];
+
+    return self;
+}
+
 - (void)awakeFromNib
 {
     [self setDelegate: self];