Makefile.target: set icon for binary file on Mac OS X

Implements setting the icon for the binary file in Mac OS X.
Signed-off-by: NJohn Arbuckle <programmingkidx@gmail.com>
[PMM: tweaked makefile to use $@ and quiet-command]
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Makefile.target

@@ -180,6 +180,10 @@ $(QEMU_PROG_BUILD): config-devices.mak
 # build either PROG or PROGW
 $(QEMU_PROG_BUILD): $(all-obj-y) ../libqemuutil.a ../libqemustub.a
 	$(call LINK, $(filter-out %.mak, $^))
+ifdef CONFIG_DARWIN
+	$(call quiet-command,Rez -append $(SRC_PATH)/pc-bios/qemu.rsrc -o $@,"  REZ   $(TARGET_DIR)$@")
+	$(call quiet-command,SetFile -a C $@,"  SETFILE $(TARGET_DIR)$@")
+endif
 
 gdbstub-xml.c: $(TARGET_XML_FILES) $(SRC_PATH)/scripts/feature_to_c.sh
 	$(call quiet-command,rm -f $@ && $(SHELL) $(SRC_PATH)/scripts/feature_to_c.sh $@ $(TARGET_XML_FILES),"  GEN   $(TARGET_DIR)$@")