Use DEBUG instead of __NO_INLINE__ since this is not defined for -Os

apps/squeak4/Makefile

@@ -5,7 +5,7 @@
 
 # Definitions.
 CC = avr-gcc
-CFLAGS = -mmcu=atmega32u2 -Os -finline -Wall -Wstrict-prototypes -Wextra -g -I../../drivers -I../../extra -I../../drivers/avr -I../../fonts -I../../utils
+CFLAGS = -mmcu=atmega32u2 -Os -Wall -Wstrict-prototypes -Wextra -g -I../../drivers -I../../extra -I../../drivers/avr -I../../fonts -I../../utils
 OBJCOPY = avr-objcopy
 SIZE = avr-size
 DEL = rm
@@ -40,7 +40,7 @@ led.o: ../../drivers/led.c ../../drivers/avr/pio.h ../../drivers/avr/system.h ..
 ledmat.o: ../../drivers/ledmat.c ../../drivers/avr/pio.h ../../drivers/avr/system.h ../../drivers/ledmat.h
 	$(CC) -c $(CFLAGS) $< -o $@
 
-mmelody.o: ../../extra/mmelody.c ../../drivers/avr/system.h ../../extra/mmelody.h ../../extra/ticker.h
+mmelody.o: ../../extra/mmelody.c ../../drivers/avr/system.h ../../extra/mmelody.h
 	$(CC) -c $(CFLAGS) $< -o $@
 
 squeaker.o: ../../extra/squeaker.c ../../drivers/avr/system.h ../../extra/squeaker.h ../../extra/ticker.h

apps/squeak4/Makefile.test

@@ -41,7 +41,7 @@ system-test.o: ../../drivers/test/system.c ../../drivers/test/avrtest.h ../../dr
 timer-test.o: ../../drivers/test/timer.c ../../drivers/test/system.h ../../drivers/test/timer.h
 	$(CC) -c $(CFLAGS) $< -o $@
 
-mmelody-test.o: ../../extra/mmelody.c ../../drivers/test/system.h ../../extra/mmelody.h ../../extra/ticker.h
+mmelody-test.o: ../../extra/mmelody.c ../../drivers/test/system.h ../../extra/mmelody.h
 	$(CC) -c $(CFLAGS) $< -o $@
 
 squeaker-test.o: ../../extra/squeaker.c ../../drivers/test/system.h ../../extra/squeaker.h ../../extra/ticker.h

apps/squeak4/doc/Makefile

@@ -1,7 +1,7 @@
 # File:   Makefile
 # Author: M. P. Hayes, UCECE
 # Date:   11 Sep 2010
-# Descr:  Makefile for squeak2 docs
+# Descr:  Makefile for squeak4 docs
 
 DEL = rm