Update to v096r01 release.

byuu says:

Changelog:

- restructured the project and removed a whole bunch of old/dead
  directives from higan/GNUmakefile
- huge amounts of work on hiro/cocoa (compiles but ~70% of the
  functionality is commented out)
- fixed a masking error in my ARM CPU disassembler [Lioncash]
- SFC: decided to change board cic=(411,413) back to board
  region=(ntsc,pal) ... the former was too obtuse

If you rename Boolean (it's a problem with an include from ruby, not
from hiro) and disable all the ruby drivers, you can compile an
OS X binary, but obviously it's not going to do anything.

It's a boring WIP, I just wanted to push out the project structure
change now at the start of this WIP cycle.

hiro/cocoa/widget/horizontal-scroll-bar.cpp

@@ -0,0 +1,93 @@
+#if defined(Hiro_HorizontalScrollBar)
+
+@implementation CocoaHorizontalScrollBar : NSScroller
+
+-(id) initWith:(hiro::mHorizontalScrollBar&)horizontalScrollBarReference {
+  if(self = [super initWithFrame:NSMakeRect(0, 0, 1, 0)]) {
+    horizontalScrollBar = &horizontalScrollBarReference;
+
+    [self setTarget:self];
+    [self setAction:@selector(scroll:)];
+
+    [self setControlSize:NSRegularControlSize];
+    [self setScrollerStyle:NSScrollerStyleLegacy];
+    [self setEnabled:YES];
+
+    [self update];
+  }
+  return self;
+}
+
+-(void) update {
+  double d = 1.0 / horizontalScrollBar->state.length;
+  double f = d * horizontalScrollBar->state.position;
+
+  [self setDoubleValue:f];
+  [self setKnobProportion:d];
+}
+
+-(IBAction) scroll:(id)sender {
+  auto& state = horizontalScrollBar->state;
+
+  switch([self hitPart]) {
+  case NSScrollerIncrementLine:
+  case NSScrollerIncrementPage:
+    if(state.position < state.length - 1) state.position++;
+    [self update];
+    break;
+
+  case NSScrollerDecrementLine:
+  case NSScrollerDecrementPage:
+    if(state.position) state.position--;
+    [self update];
+    break;
+
+  case NSScrollerKnob:
+    state.position = [self doubleValue] * state.length;
+    break;
+  }
+
+  horizontalScrollBar->doChange();
+}
+
+@end
+
+namespace hiro {
+
+auto pHorizontalScrollBar::construct() -> void {
+  @autoreleasepool {
+    cocoaView = cocoaHorizontalScrollBar = [[CocoaHorizontalScrollBar alloc] initWith:self()];
+    pWidget::construct();
+
+    setLength(state().length);
+    setPosition(state().position);
+  }
+}
+
+auto pHorizontalScrollBar::destruct() -> void {
+  @autoreleasepool {
+    [cocoaView release];
+  }
+}
+
+auto pHorizontalScrollBar::minimumSize() const -> Size {
+  @autoreleasepool {
+    return {32, (int)[NSScroller scrollerWidthForControlSize:NSRegularControlSize scrollerStyle:NSScrollerStyleLegacy]};
+  }
+}
+
+auto pHorizontalScrollBar::setLength(uint length) -> void {
+  @autoreleasepool {
+    [cocoaView update];
+  }
+}
+
+auto pHorizontalScrollBar::setPosition(uint position) -> void {
+  @autoreleasepool {
+    [cocoaView update];
+  }
+}
+
+}
+
+#endif