cocoa: add application icon to the Dock when run from CLI

Application icon was added to the Dock only when run inside of a bundle. That
was handled automatically by OS X using the Info.plist definition.

To add the Application icon when run as a CLI program, I used the samme
approach in the X11 code and loaded the icon as a static binary blob inside
of mpv's binary. This is the simplest approach as it avoid headackes when
relocating the binary and such.

osdep/macosx_application.m

@@ -468,6 +468,21 @@ static bool bundle_started_from_finder(int argc, char **argv)
     }
 }
 
+static const char macosx_icon[] =
+#include "osdep/macosx_icon.inc"
+;
+
+static void set_application_icon(NSApplication *app)
+{
+    NSData *icon_data = [NSData dataWithBytesNoCopy:(void *)macosx_icon
+                                             length:sizeof(macosx_icon)
+                                       freeWhenDone:NO];
+    NSImage *icon = [[NSImage alloc] initWithData:icon_data];
+    [app setApplicationIconImage:icon];
+    [icon release];
+    [icon_data release];
+}
+
 void macosx_finder_args_preinit(int *argc, char ***argv)
 {
     Application *app = mpv_shared_app();
@@ -489,6 +504,7 @@ void macosx_finder_args_preinit(int *argc, char ***argv)
         *argc = cocoa_argc;
         *argv = cocoa_argv;
     } else {
+        set_application_icon(app);
         for (int i = 0; i < *argc; i++ ) {
             NSString *arg = [NSString stringWithUTF8String:(*argv)[i]];
             [app.argumentsList addObject:arg];