New makefile (src/tools/Makefile) logic:

- make fresh install: still builds new everything (libraries, services, image)
- make clean image: only builds new boot image (about 5 sec. now!)

servers/Makefile

@@ -7,6 +7,7 @@ usage:
 	@echo "Makefile for all system servers." >&2
 	@echo "Usage:" >&2
 	@echo "	make build    # Compile all system servers locally" >&2
+	@echo "	make image    # Compile servers in boot image" >&2
 	@echo "	make clean    # Remove local compiler results" >&2
 	@echo "	make install  # Install servers to /etc/servers/" >&2
 	@echo "	                (requires root privileges)" >&2
@@ -21,3 +22,10 @@ all install depend clean:
 	cd ./init && $(MAKE) $@
 	cd ./inet && $(MAKE) $@
 
+image:
+	cd ./pm && $(MAKE) build
+	cd ./fs && $(MAKE) build
+	cd ./rs && $(MAKE) build
+	cd ./init && $(MAKE) build
+
+