- specify that 'all' is a .PHONY target

- add a copyright header to the build_tools Makefile
- remove 'depend' from the 'all' target in agi/ and utils/ since it is handled
  by the main Makefile already


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@35479 65c4cc65-6c06-0410-ace0-fbb531ad65f3

agi/Makefile

@@ -11,7 +11,7 @@
 # the GNU General Public License
 #
 
-.PHONY: clean clean-depend
+.PHONY: clean clean-depend all
 
 AGIS=agi-test.agi eagi-test eagi-sphinx-test jukebox.agi
 
@@ -20,7 +20,7 @@ ifeq ($(OSARCH),SunOS)
   LIBS=-lsocket -lnsl ../strcompat.o
 endif
 
-all: depend $(AGIS)
+all: $(AGIS)
 
 install: all
 	mkdir -p $(DESTDIR)$(AGI_DIR)